Upgrade your Atari ST with our CPU accelerators, RAM kits, and other accessories. Find parts for Atari 520, 1040, STE, Falcon 030, Mega ST, and more. Enhance performance with our Atari upgrades today!

A high quality enclosed compatible power switch for the 2600 JR console.

Please note, that because the original switches have a offset pin layout, these switches are actually dual pole, where you must cut off one row of pins in order for the switch to fit into the motherboard.

Mod boards to replace the horrid foam JR push switches with proper clicky switches (like used in mice buttons).

New injection molded 2600 / 7800 cartridge shell. Looks and fits like the originals.

Available until Stock exhausted.

This board can be configured as a stand-alone TOS206 decoder, or combined TOS206 decoder and 16MHz booster for the STM/STF/STF/H4/H5 motherboards. Surface mount components are preassembled and programmed as illustrated on the image.The header pins are also preassembled. No other items are included in this kit.

If you want to use this as the booster, then you will need the CPU (Item #0043) And optional 68K socket (Item #0038). Because of physical constraints on original machines it may not physically fit or you may require a CPU relocator broad and suitable DUALTOS FAST ROM board such as item #0131. Also all the mandatory fixes should be done prior to installation Otherwise your machine will likely not be stable. If you are not good at soldering then do not attempt this upgrade on an original machine.

ST536 ST EDITION REV 5 PCBs with bird seed (bottom SMT parts assembled). The ST EDITION TF536r5 has been modified to work better on the ST series of machines and includes a on-board ROM socket and built in TOS206 decoder, 64MB TTram and fixed IDE port.

NOTE: This TF536r5 variant is not compatible with previous generation TF536r2 boards or firmware and is not compatible with Amiga etc.

I also sell PGA sockets, item #0181, and 030 CPU item #187.

STF C070789 CPU relocator PCB with bus pullups. You will also need some header pins such as item #0132, And optionally 68K socket #0038.

Genuine TF536r2 PCBs with bird seed (bottom SMT parts assembled).

I also sell PGA sockets, item #0181, and 030 CPU item #187.

STE V1 series 32MHz Plug-in in booster. Gives a overall game boost up to 27% (Tested with FrontBench) and up to 300% GEM & Applications boost with average 183% (Tested with GB6).

Booster is tested and assembled and includes spacers and dummy CPU. You also need the STE FAST TOS kit #0232 or #0139. CPU is included in the booster. You may need #0202 if your STE has the 74S257. Switches are recommended #0010.

Please make sure your STE has a socketed 68000 before ordering! This kit still needs some minor soldering!

If you have DMA issues *ONLY* when the booster is fitted, then this addon board may fix that problem.

68K Dummy CPU for use with exxos plug in boosters and adapter boards.

Originally designed to fit the TF536 into a STE. They are being sold as a generic STE to DIP adapter. These have the bus pullups and clock buffer is built on and is a 4 layer PCB design. The CPU socket header pins are included only.

NOTE: This is being sold as is, as a prototype for developers only. By no means is this a final fully polished product and you should expect all the associated hassles with fitting such a board and using it etc. You will also need the dummy CPU, item #0243. I also suggest a 68K socket item #0038.

Used for the Atari with the 374 latches. Board has SMT parts only assembled as illustrated.

These are sold as-is, untested, no firmware or OS flashed, no CPU socket,no CPU or FPU are included.
Other items you need:
CPU sockets item #0181. Heatsink item #0222. MC68030 CPU item #0187. FPU 50MHz item #0265.

The DFB1X Falcon accelerator. It has two banks of flash where one is preprogrammed with TOS404. It comes pre-fitted with a 50MHZ FPU and 50MHZ CPU. Also includes 128MB of TTram.

Standard 5V 40MHz oscillator in DIP8 size package (4pins)

Picture for illustration only.

Standard 5V 50MHz oscillator in DIP8 size package (4pins). Stability 30 PPM.

Picture for illustration only.

74F257 DIP 16. Update or replacement for the 74S257 commonly found in STEs.

Tested Used video shifter for ST/F/M. De-soldered from working motherboards and re-tested. Cannot guarantee solder free legs or perfectly straight. May also have minor cosmetic marks.

New blank 27C1001 100ns EPROM 32 pin. Normally used in STE,MSTE etc. Sold in packs of 2.

New low profile RTC chip to replace the older/faulty DS12887 NVRAM chips in the Falcon. This design uses a external CR1220 battery (not included) to power the RTC module. This module is assembled and fully tested.

NOTE: You may need to place some thick card (if re-fitting the shielding) above the RTC module (glue card on underside of shielding) , otherwise the metal could short the battery 5V to gnd! Modifications to the shielding may also be needed ( or just leave it off!)
NOTE: You must use the low profile socket with this module, item #0112

NEW STV8438CV FALCON VIDEO DAC. Legitimate parts, not sourced from China!

I have tested these CPUs in a DFB1X at 50MHz. See the Info link for tests I do. They have been tested without heatsink and deemed to work fine. Though I do not recommend running without a heatsink for extended periods of time.

NOTE: These will be stamped as RC33,RC50 etc. Though as China reprints them all, its really irrelevant what's printed on them anymore. Picture for illustration only. Carefully prise off the blank insertion foam. DO NOT rip it off side to side else you will bend the pins!

I also sell small stick-on heatsinks item #0222

Suitable for a stock Falcon or any other machine which requires a 16MHz 68882 FPU. Fully tested (each instruction) at 16Mhz.

Picture for illustration only.

Suitable for accelerators or any other machine which requires a 40MHz 68882 FPU. Fully tested (each instruction) at 40Mhz.

Picture for illustration only.

Suitable for accelerators or any other machine which requires a 50MHz 68882 FPU. Fully tested (each instruction) at 50Mhz.

Picture for illustration only.

Replacement for the MC68901 MFP as used in many ST's.

MC68B50 ACIA - Can be overclocked faster than the older 6850. Ideal for replacement of faulty or where keyboard faults happen with my boosters fitted. These are generally as new or pulls from working hardware. All tested.

Tested MC68HC000 CPU at 8Mhz. Replacement for the STE CPU running at 8MHz. These CPU's are low power versions of the 68000 CPU commonly used in the STE and MEGA STE computers. These use a lot less power and run cool even at higher speeds.

These CPU's greatly solve -38 DMA (Bad DMA) issues in the STE. No need to change the -38 DMA chip, swap with this CPU first! You should also do the mandatory fixes!

Replacement CPU for the ST/STF/STFM/MEGA ST Machines. They may be stamped as P10 or P16, or P8 16MHz etc. But they have been tested with my 16MHz booster.

Image for illustration only.

DIP 14 type 5C OSC 32.084988MHz .

(These were expensive to obtain sorry!)

Tested replacement GLUE C025915-38A for the Atari STF/M/MEGA ST computers.

Tested replacement MMU C025912-38 for the Atari STF/M/MEGA ST computers.

YM2149 / 8910 etc SOUND IC for Atari ST/F/M/E etc. Chips are pulls or NOS and may have cosmetic marks. All chips have been tested and manufacture will vary.

Tested used ST/F/M/E DMA . De-soldered from working motherboards and re-tested. Cannot guarantee solder free legs or perfectly straight. May also have minor cosmetic marks.

NEW tested WD1772 00-02 Floppy controller IC for Atari computers etc. These IC's are capable of 8MHz & burst speeds of 16mhz and are suitable for use with my 720k / 1.44 floppies kits.

NEW tested WD1772 Floppy controller IC for Atari computers etc.
These IC's are capable of 8MHz & burst speeds of 16mhz and are suitable for use with my 720k / 1.44 floppies kits.

This chips are NOT sourced from China! Picture for illustration only. Brands may vary.

De-soldered from working motherboards and re-tested. Cannot guarantee solder free legs or perfectly straight. May also have minor cosmetic marks. Picture for illustration only.

80pin SMT GLUE. Fits Some later STFM machines and the H4 remake board. Available until stock is exhausted. NOTE: Some pins may not be perfect straight and will need minor straightening.

80pin SMT MMU. Fits Some later STFM machines and the H4 remake board.

Adds 1.44 floppy support to the H4 & H5 series motherboards. Also used on the 1.44 floppy upgrade kit, item #0041.

New pack of 5 in cut tape STM32F042F6P6TR. Sourced from the manufacturer not from China!

PLCC 52 MFP MC68901 NEW & TESTED.

HTM50 Digial amplifier module 25+25watts into 8R single 24V rail PDF

HTM50S uses a high quality MAXIM MAX9709 chipset which can deliver superb sound quality up to 50watts RMS with up to 87% efficiency.The HTM50 module is operated from a single supply rail from 12V to 24VDC and typically requires just 0.5amps (500mA) of supply current (2amps max) under full load.Module has onboard 5V regulator which can be used to power external logic or used as a logic pullup rail. The board measures about half the size of a credit card 60mm x 38mm x 12mm (LxWxH) approx.


Available until stocks are exhausted.

PCB adapter to convert the "funky" PLCC68 layout into a modern PLCC68 socket.
NOTE: As of October 2024, PCB ONLY is supplied. Sockets item #231. The longer headers which were used in the kit, I do not currently sell, so you will have to source them yourself, or possible headers item #0158 may work but I have not tried.

Standard PLCC 84 through-hole socket. Unbranded.

General 72 pin 45deg angle simm socket. (simm not included).

General 72 pin vertical simm socket for Atari or Amiga projects.

3M Brand PLCC52 socket.

3M Brand PLCC68 socket. NOTE: These do not fit original machines, you need the FUNKY sockets.

A good quality 30pin simm socket. Ideal for replacements on the STE etc.
Sockets are sold individually.
I cannot obtain any more of these without investing in a pack of 1,000. So stock is limited and only available until my person stock is exhausted.

Ultra low profile Turned pin sockets as normally used for Falcon NVRAM etc. 1.5mm black plastic thickness.

Branded 24 Pin 0.6in Turned Pin Socket . Fits WD1772 etc
Picture for illustration only.

3M BRANDED 40 PIN SOCKET, fits SHIFTER, DMA,YM2149 etc. Sold individually.

48 PIN SOCKET, fits MFP. Pack of 2.

New turned-pin 64pin DIP socket - suitable for the 68000 DIP CPU.
These are quality branded sockets, not cheap China sockets!
Picture for illustration only.

USED PULLS from working machines. Sockets will need pins cleaning (of solder) and straightening etc. Picture for illustration only.

NEW 128 PGA socket for 030 CPU. exxos branded.

3M brand PLCC44 socket. Used on DUALTOS boards and remake motherboards etc.

Quality AMP right angle 72 pin simm socket.

New connector for "exxos" PSU's for the Falcon 030. Professionally made a by a cable manufacture. Cable ends are tin plated ready to solder.

Primarily used on the remake boards, but also can be used on originals. 34 WAY.

IDE HEADER 2MM 2X22. PIN LENGTH 8.8mm approx. PACK OF 2.

Useful little adapter to convert 2.5" IDE drives to CF flash cards. Ideal for Falcon IDE or IDE board capable of using CF cards.
Cables sold separately.

Single length of 40 way round header pin strip. Ideal for spares,own projects or repairs etc. These pins are used in many exxos kits.

Thin pin end is approx 0.5mm dia, 4mm long.
Thick pin end is approx 0.6mm dia, 3mm long.

NOTE: This item was previously sold in packs of 4 but now sold individually and price adjusted.

Single 40 pin socket strip as used in many of my upgrades. Ideal for spares or own projects or repairs etc. Can be used to make custom length DIP sockets etc. Sold individually.

Single stripe of 40 pin square pins as used in many of my upgrades. Also ideal for jumper pins etc.

Total pin length approx 11.55mm. Pin dia approx 0.65mm.

NOTE: these were previously sold in packs of 10. Price has been reduced accordingly for single strips only.

IDE 2.5" 44pin female to female. Cable length is approx 6cm.

15CM Cable for use with my 4MB RAM upgrade (0035). Fits STF/M C070789 style motherboards.

22CM Cable for use with my 4MB RAM upgrade (0035). Fits STM & SILLY STYLE STF/M motherboards

30CM Cable for use with my 4MB RAM upgrade (0035). Cables mostly used for fitting in the MEGA ST.

D-sub 25 PCB mount female connector for parallel/printer port.

D-sub 25 PCB mount male connector for ST serial port.

DB19 Female solder bucket socket. Used on Falcon video cables etc.
Picture for illustration only.Colours may vary.

D-Sub 19 Way Male ACSI Connector solder bucket. Picture for illustration only. Colours may vary.

NEW unused right angle PCB DB19 Female connector.

NOTE: There are several variations of DB19F as used on Atari motherboards over the years, so if this is used as a replacement the 2 large mounting holes may not align correctly and may need modification.

14 PIN DIN PCB socket for external floppy drives on Atari ST.

Great quality fast charging Nylon Braided Micro USB Cable. 1 Meter length.

Great quality fast charging Nylon Braided Micro USB Cable. 2 Meter length.

13 pin DIN PCB mount socket (ST video connector)

13 PIN DIN plug which fits the RGB/monitor port on the STF/E machines etc.

PRO-SIGNAL (PSG02613) 5 pin din female / socket connector. Ideal for MIDI patch cables etc.

Sold in packs of 2.

Available until stocks are exhausted.

5 pin DIN connector MIDI ports. primarily used on the H4 & H5 series motherboards.

New ST PSU connector manufactured by a professional cable company. Intended for use with the exxos PSU's. Cable may fit some original ST PSU's but please check. Wire length is approx 30mm (excluding housing). Wire ends are tin plated ready to solder. exxos brand.

Available until stocks are exhausted.

New ST PSU connector manufactured by a professional cable company. Intended for use with the exxos PSU's. Cable may fit some original ST PSU's but please check. Wire length is approx 45mm (excluding housing). Wire ends are tin plated ready to solder. exxos brand.

Standard 2.54mm short jumper links. Sold in packs of 20.

Standard 2.54mm tall jumper links. Sold in packs of 10.

USED ST cartridge connector with bracket.

New 9 pin mouse / joystick extension cable. Approx 12" length end-to-end. Sold individually. exxos brand.

Standard sync over composite RGB cable. Please make sure your ST has composite sync output before ordering this cable.
Alternative sync cables will be available in the near future.

New DB25F to DB9F Diagnostic cable to connect your machine to a PC to use a diagnostic cartridge ( #0165 ). Cable is approximately 2m long. exxos brand.

Male to Male scart, black 5 meters long. Gold plated. All pins connected.

This kit is needed if you want to use 1.44 floppies on your ST/STE/MEGA ST machines. The board is fully automatic and will switch between 720K and 1.44 mode without the use of drivers or special software or TOS patches etc. You can use internal or external drives in either 720k or 1.44 mode. V7 series has the media change fix so TOS behaves better when the floppy is changed and also includes DMA pull up resistor which will help solves some DMA related issues.

PCB is as illustrated with SMT assembled only. You will need a MPF920 drive, item #0037. Header pins, item #0158. Socket , item #0221. V6C floppy controller , item #0227.

Refurbished 720K Double sided drive with front. These drives are mostly Epson/Sony drives, but can vary. Drives have been cleaned and tested fully. Drive heads have been cleaned etc.

Please note as these drives are old, they may have some rusting on the drives outer case. This in no way affects the operation of the drive.

I am struggling to find working 720K drives these days so I am not sure how much longer they will be listed in store.

Picture for illustration only.

Sony MPF920 floppy drive updated which are working to the maximum extended format of 22 sectors 86 tracks.They are a ideal as a replacement drive or to match my 1.44 floppy kit upgrade.

Please note some minor case modifications are needed around the eject button. See HERE and HERE.

If you are replacing a 720k drive and plan to use this drive with 1.44 floppies, then you need one of my floppy upgrade kits #0041

Please note. The floppy cable needs to be inserted upside down (or use item #0208) to use this drive and you will need to modify the internal jumper to use as a internal floppy drive as shown the info link. All drives are new or as-new. Some drives may have minor cosmetic marks on the outer case or lables.

A new standard 3.5inch floppy cleaning disk with fluid. Place 2 drops of fluid onto the disk and insert into drive. Attempt to read the disk for 30-60 seconds to clean the heads. WARNING: Wait 10 minutes before using the drive to allow fluid to evaporate from the heads.

Replacement drive belt for the original long button floppy drives.

These drives are not the cheaper USB versions limited to 1.44MB.They work with both 720K & 1.44MB formats. They're refurbished, with potential minor cosmetic blemishes. Ensure your OS supports floppy drives. They've been tested on Win7 & are plug-and-play without needing drivers.

The purpose of this board is to alleviate the problem of having to physically twist the cable and using a more modern MPF920 1.44mb floppy drive. It also solves the problem of having to dismantle the drive to alter the drive ID select. Also as noted the mandatorily fixes, the 1772 needs pull-up resistors to function correctly and these are also included on this board!

NOTE - While you can use a 1.44 floppy drive, this board does not add 1.44 support. You need a kit like ITEM #0041 to add support for 1.44 floppies.

A useful 10 inch (approx) custom made extension cable to extend the internal floppy drive cable. Will allow HxC2001,gotec etc to be fitted internally should the current cable be to short. The cable can be easily folded under , or over, the drive to allow a easy 'twist' in the cable without straining or breaking the motherboard cable & connectors.

Standard 4 pin floppy power cable. approx 6 inches long.

74LS02N QUAD 2 INPUT NOR GATE.

Picture for illustration only. Brands may vary.

74LS06N HEX INVERTER. As used on most machines on the floppy circuit.

Picture for illustration only. Brands may vary.

74LS07N BUFFER & LINE DRIVER

Picture for illustration only. Brands may vary.

74LS11 SMT AND GATE (U2) AS USED ON THE H4,H5 ONLY.

Picture for illustration only. Brands may vary. NOTE: IC is supplied a small box to prevent damage during transit. Open carefully!

74LS11N. Used when converting 6 chip TOS ROM to 2 chips.

Picture for illustration only. Brands may vary.

74LS244N 3 STATE BUFFER DRIVER. Sold in packs of 2.

Picture for illustration only. Brands may vary.

74LS245N BUS TRANSCEIVER.

Picture for illustration only. Brands may vary.

74LS373N D-TYPE TRANSPARENT LATCH. Bus isolator as used on ST related machines. Sold in pack of 2.

Picture for illustration only. Brands may vary.

OPTOCOUPLER USED ON REMAKE BOARDS ONLY. ALPHA,H4,H5.

Picture for illustration only. Brands may vary.

74F244N 3 STATE BUFFER DRIVER

Picture for illustration only. Brands may vary.

74F373N D-TYPE TRANSPARENT LATCH

Picture for illustration only. Brands may vary.

New replacement mouse switches (large type). Pack of 2.

New 2 button ball PS2 mouse. Ideal for use with PeST.

Available until stock is exhausted.

PeST is the acronym for PS2 enumerator for the Atari ST. It enables any PC PS2 mouse to be used with the Atari ST / STF / STFM / STE / Mega / Mega STE / TT / Falcon etc.

PeST supports 3 useable speed modes from original (speed 1) to fast (mode 3). Mode 3 is default which is faster than the original ST mouse.

The device is completely automatic and fully plug and play.

New replacement mouse switches (small type). Pack of 2.

New replacement MFP 2.45760MHz Crystal.

Branded black self-adhesive heatsink. Approx 19mmx19mmx4mm.

Branded black self-adhesive heatsink. Approx 40mmx40mmx5mm. It is about 5mm larger than the 030 CPU. These are used on the second run of the DFB1 Falcon booster.

Remove your CPU and plug this diagnostic board in to debug the first few bus cycles manually on your motherboard. PCB is assembled as per image. Headers and jumpers are included, but not fitted.

A new SD based hard drive by dad664npc. These drives come with partitioned SD card ready to load your favorite software on to and adapter cable. All that is needed is a USB cable such as item #0150 and a generic 5V USB PSU.

Version 2 (blue board) of the clock buffer for the Falcon 030 machines. This board cleans up and buffers the falcon default clocks which is attributable to noises and crackles in audio applications or glitches in SCSI transfers. This board is suitable for the majority of Falcons and sets the standard for stock machines.
NOTE: V3 may be supplied but does not affect anything on a stock Falcon.
V2/V3 are available until stocks are exhausted. The recommended replacement is the V4 , item 0257.

Version 4.2A ALPHA Falcon 030 clock buffer patch. This board cleans up and buffers the falcon default clocks which is attributable to noises and crackles in audio applications or glitches in SCSI transfers. The V4 series Has better output drive capabilities and noise immunity than previous generations and fixes more issues, but is also more complicated to install. Do not attempt fitting unless you are good at soldering! Parts supplied are the V4.2A assembled board, 47pF & 100pF capacitor, 2 header pins, wire, 68R resistor.

PCB ONLY for the H4 buffer fix.

Alpha video fix for the 1712 shifter problems on the STE.

If your STE has bad whittles or interference type noises in the audio, then give this kit a try! Please also note the STE PSU is likely one of the main causes of noise.

Kit includes 2 part assembled mini PCB's. Header stripes are NOT supplied or fitted. Please order a strip of item #0158.
Please note this kit might not solve all audio problems, but I have had reports that it has definitely improved issues for a lot of people.
NOTE - The green PCBs are slightly smaller and require the two tabs breaking off them. Fitting is otherwise identical to the purple boards as shown in the fitting instructions.

Replaces the ST's RGB output stage with a modern video DAC which cleans up The majority of video noise giving a crisp and clear picture. PCB comes with birdseed. You will need the DAC #0104 and header pins #0132.

Contains various capacitors to replace the ones used in failing STFM video circuits.

12V 40x40x10mm ~ 50mA. Quiet 26dB, Fluid Bearing fan. Ideal as compatible replacement fan for the falcon.
BLACK=0V. RED=12V
Image for illustration only.

Use a dedicated crystal , typically 32MHz-50MHz to directly drive the Falcon FPU giving it a boost!
PCB comes part assembled. Header pins (supplied) and OSC (not supplied) need soldering.
Installed requires track cutting on your Falcon. So do not attempt this upgrade unless you know what you are doing!

If you have stable at the issues, in particular when using a accelerator with a H5 A1 or B1 Revision board, it may have been fitted with 4.7K bus pullups (please check before ordering). If you experience stability issues then fitting this board should help alleviate the problems. There is no need to fit this board on the C1 series of boards. These boards come part assembled with the SMT resistor packs pre-installed. You need to fit the header strips yourself.
NOTE: You also need 2 header strips such as #0132.

1.2K SIL resistor pack P100 for STE only.

NOTE: Marking on resistor array is 122J.

Picture for illustration only. Brands & colours may vary.

10K SIL resistor. Generally used on ST/STF/STFM/STE/MEGA ST as part of the DMA fixes.

NOTE: Marking on resistor array is 103J.

Picture for illustration only. Brands & colours may vary.

5x 2.2K SIL resistors to upgrade ST/STF/STFM/STE/MEGA ST bus resistors.

NOTE: Marking on resistor array is 222J.

Picture for illustration only. Brands & colours may vary.

2x capacitors to Upgrade the failed ones in the ST/F/E Reset circuit. This fixes various power up reset issues.

This fantastic DIY kit offers an excellent soldering practice plate to enrich your skills and spark unparalleled creativity. The left and right 3 columns of components are designated for soldering practice, with test points provided in each column. The back side of the circuit board serves as an additional area, featuring a ruler for easy component measurement. After soldering (parts supplied) , simply apply electricity (3-12V) to witness the results. This allows for swift assessment of the soldering quality. PCB measures 85.6mm in length, 54mm in width, and 1.6mm in height.

Embark on an electrifying journey with our Educational Practice Soldering Board – a thrilling fusion of fun, challenge, and skill-building! Picture this: an ingenious board featuring 8 mysterious jumper pads, daring you to intentionally create faults and then conquer them like an electronic detective armed with a trusty multimeter. As the centerpiece, a dazzling 555 LED Flasher Circuit with two banks of dynamic LEDs awaits your soldering prowess. Engage in the art of precision soldering and masterful fault-finding – every session is an exhilarating adventure into the heart of electronics! Elevate your learning with a board that's not just educational but an absolute blast – because mastering electronics should be as captivating as it is challenging! Uncover the secrets of circuits and conquer the unexpected – welcome to the world of limitless possibilities! All parts are included in the kit. PP3 battery not supplied.

Pack of 4 self adhesive replacement rubber feet as generally used on ST/E/F/MEGA ST/Falcon etc cases.

The 3-in-1 monitor adapter (Falc2VGA) is a small piece of hardware that plugs into the monitor port of the Atari Falcon030. Its main purpose it to make it possible to connect the Falcon to a monitor using a standard VGA cable. It also provides a switch to toggle between RGB and VGA video modes (useful for monitors that accept both RGB and VGA frequencies), and an external clock signal to the Falcon030 video chip (to enable higher screen resolutions) compatible with the Blow-Up software.
The monitor adapter comes with a 40MHz oscillator which can be changed on the onboard socket for a faster one such as 50MHz (sold separately item #0201 , but not all Videl will apparently run at that speed) . The oscillator provides an external clock signal to the video chip of the Falcon to make it possible to achieve higher resolutions than the standard video modes when used in combination with the Blow-Up software.
NOTE: You need a 5V USB PSU to power the board (not included) I do not recommend using phone chargers for this either (You do not need the osc or power to the board to use standard falcon resolutions). I sell quality USB cables items #0150,#0151. The OSC has a sharp corner which corresponds to the sharp corner on the pcb silk screen print (do not go on the socket orientation) .
This new design now has an auto power off for the oscillator. Orange LED denotes USB power. Green LED denotes OSC power (when the falcon is turned on).

3D printed to fit the H4 H5 series motherboards. Sold individually.

Replaces the ST's RGB output stage with a modern video DAC which cleans up The majority of video noise giving a crisp and clear picture. This board is tested and assembled. It also has the 4 MB RAM connector so you don't need the shifter adapter when using item #0035.

Replaces the ST's RGB output stage with a modern video DAC which cleans up The majority of video noise giving a crisp and clear picture. The board comes as shown in the image you also need items #0104,#0132,#0108.

A really cool breadboard PSU. Accepts 7-12V via DC jack input or obtains 5V from USB connector. Jumpers on board can switch between 3.3V or 5V output on both sides. Output current 500mA on 3.3V and 5V outputs.

All-IN-ONE cartridge PCB assembled and tested. Has Atari diagnostic software for, ST,STE,MSTE,TT,030. Also has the new RAM test software by chzsoft, and GEM BENCH 6 benchmarking software. Software is selected by jumper links on board. The settings for these are conveniently printed on the PCB itself.

I strongly recommend also buying a diagnostic cable to hook up your ST to your PC should there be no video output etc item #0191

ST2VGA adapter connects the ST/F/M/E/MEGA ST to a multisync VGA monitor. Colour / MONO switches done by a simple jumper on top of the board. The adapter also has a standard 3.5mm audio output jack. Unlike most other adapters, this also fits the MEGA ST due to its taller construction.

NOTE: Your monitor needs to support 15KHz otherwise you are not be able to use colour mode)

Virgin C070789 STFM MOTHERBOARD. Revision will generally be C,D,E,F. These include TOS1.04 UK which is the rare original ROM's. They come with 512K RAM which is also tested. These boards power up and run GemBench6 just fine. These boards are the best revision for modding and tweaking.

I must however stress due to the age of these boards and the rough postal system, I cannot guarantee operation on arrival. So buyers must take this into consideration and expect some troubleshooting. I will package these are carefully as possible.
Picture for illustration only.

The latest iteration of the STF remake motherboards, version H5C1.Please not these are sold as untested and cannot be tested without fully assembling them. Fully built & tested boards may be available in due time.

NOTE - Unfortunately you cannot order other items from the store with these motherboards. You also cannot order more than 2 boards in a single shipment due to postal issues.

The latest iteration of the STF remake motherboards, version H5C1. Please not these are sold as untested and cannot be tested without fully assembling them. Fully built & tested boards may be available in due time.

PCB price is higher for UK, as postage is not calculated correctly (undercharged on checkout).

NOTE - Unfortunately you cannot order other items from the store with these motherboards. You also cannot order more than 2 boards in a single shipment due to postal issues.

All Atari falcons should have this upgrade done.This kit will help to improve audio,video,hard drives,stability etc of your Falcon and reduce the risk of noise spikes killing the motherboard.

Contains Top rated quality, low ESR, High ripple capacitors.
3x 1,000uf replaced with 3x 1500uF
1x 33uF 400V replaced with 47uF 400V
1x 330uf replaced with 680uF
2x 47uF & 1x 22uF replaced with 47uF (ripple filter capacitors)
1Amp rectifier replaced with 2Amp
NOTE Some kits may be supplied with a original style rectifier. Please observe polarity when you remove your old rectifier.

This PSU kit will help to improve audio,video,hard drives,stability etc of your machine.

NOTE: Kits solder after 6th Jan 2022 have slightly different capacitors and now include a new opto coupler.

150uF 400V (C6),10uF 400V (C7), 16V 1500uF x4 (C15,C16,C17,C18) , 16V 4700uF x2 (C13,C14) ,10V 100uF (C19), 10uF 50V (C26) , 3.3uf (C20), 100uf 35V (C8),220uF 25V (C24) ,CNY17F OPTO.

All Atari's should have this upgrade done.This kit will help to improve audio,video,hard drives,stability etc of your Atari. Contains Top rated quality low ESR capacitors.
680uF 25V x3
16V 4700UF x2
250V 47UF x2
BRIDGE RECTIFIER - Replaces 2A rectifier (PCB holes may need drilling with 1mm drill to fit)

This kit replaces any of the 4,700uF axial capacitors found in many Atari's with a higher value and much higher surge current rating than the original. Value is appox 5,500uF at 8amps surge capability.

Kit includes PCB, header pins, 8 quality low ESR capacitors.

Part assembled PSU PCB which uses 2x MW PSU blocks (NOT included). SMT parts fitted and MOV. Fuse and holder supplied (not fitted). PSU will fit STF/M/E/Falcon/MEGA ST machines (not STM,MSTE,TT).
Please see the (I)nfo page for more information. You will need at least a PSU connector also, #0095, #0163, #0192.

Allows the voltage to be adjusted on the Falcon between 4.5V and 5.5V approximately. PCB supplied as a kit. The 2 SMT resistors are however pre-fitted.

If you live in fear of your efforts of "fixing" your ST/Falcon PSU (which you should be as falcons are kinda expensive!) Then I suggest buying these dummy load resistors to test your PSU under load before reinstalling it back into your machine. NOTE you CANNOT test switchmode PSUs without a load, it will malfunction! 5V (red) uses 2.2R (or 3R) and 12V (blue) uses 10R (or 22R) Then you can measure the PSU under the load resistors and make sure the voltages are correct. Note these resistors are rating for continuous use, but get EXTREMELY HOT very quickly. So I suggest not running them for more than 30 seconds at a time.

All Atari's should have this upgrade done. This kit will help to improve audio,video,hard drives,stability etc of your Atari.

Contains top rated quality, low ESR, High ripple capacitors.
1x 47UF, 400V - Replaces 400V 47uF
1x BRIDGE RECTIFIER - Replaces 2A rectifier (PCB holes may need drilling with 1mm drill to fit)
2x CAPACITOR, 16V, 1500UF - Replaces all 1000uF caps.
3x CAPACITOR, 16V, 4700UF - Replaces all 2200uF caps.
1x 1K resistor
1x 1.2K resistor.
1x STPS10H100CFP - replaces the output diode pack HRW34 (right side heatsink )

New designed PSU to fit STF/M/E/MEGA ST/Falcon machines. Features include safe low voltage operation via a efficient toroidal transformer and latest switchmode technology. PSU has much better regulation (10x easily) and cooler running than the original Atari PSU's. Fits on original PSU framework (not included). PSU connector not included (see codes 0095 & 0163 under connectors section). PSU can deliver up to 5amps on the 5V rail and up to 3amps on the 12V rail. Design only use 1 bulk electrolytic and uses SMT ceramics. Click the info icon for more info.

NOTE: PCB colours vary depending on batch and revision.

20mm 4A quick blow fuses for the exxos PSU range. Sold individually.

Designed to fit H4 & H5 series motherboards to provide approximately 12V when only using a 5V only power supply. It is designed to plug into the auxiliary floppy power connector and can deliver up to 250mA.

Low cost assembled & tested 4MB RAM UPGRADE kit for later STF/M motherboards. Fits under the PSU section. It can be switched from 1MB to 4MB for software that will not run on 4MB.

Only fits later revision motherboards such as C070789, Where there are normally 4 rows of DRAM as shown

DO NOT ATTEMPT TO INSTALL THIS UNLESS YOU ARE GOOD AT SOLDERING. IF IN DOUBT GET SOMEONE TO FIT IT FOR YOU AS DIAGNOSING DAMAGED MACHINES IS VERY COSTLY AND NOT A SERVICE I OFFER ANYMORE.

Tested 16MB 72pin 60ns SIMM. Ideal for RAM expansions for the Falcon etc.

Picture for illustration only.

4MB 72PIN SIMM. These have thoroughly been tested with YAART on a H5 motherboard. The are generally two chip and 60ns but can vary.

Assembled 72 PIN SIMM adapter card for the falcon 030. PCB layout has been carefully designed to use the bulk of the copper area for 5V and 0V rails. Board has a generous 100uF ceramic capacitance for ultimate stability. Advantage of a simm are they are easy to swap when experimenting with bus speeders and as DRAM is prone to failure, it is easy to change should a DRAM IC fail.

IMPORTANT! While the design is as small as possible, the top of the board is very close to the metal shielding, so you will need to use some thick card to use as a spacer to make sure the shielding doesn't short on top of the board!
Requires a 16MB simm which gives the maximum 14MB of usable ST-RAM.

New simms manufactured & tested in 2023 by exxos. This is a kit of 4 simms (4x 1MB 30 pin) to upgrade the STE to 4MB of ST-RAM. Simms are 70ns non-parity. Lower power consumption.

NOTE - If you have previously used simms greater than 1.4mm thickness on the connections, you will have to change the sockets as such simms are to thick and out of tolerance for the STE sockets and will have damaged them. Only handle and insert these simms on the OUTSIDE of the PCB (not the center as it can cause damage due to board flex).Image for illustration only. PCB colour is BLUE.

New DRAM 1x256k Supplied as chips on antistatic foam. This will upgrade 512K machines to 1MB.

NOTE: This only works with machines with the RAM banks as shown in the image, or C070789 Type motherboards.

NOTE: Various brands or speeds of DRAM may be supplied. This in no way affects operation. Kit includes 3x68R resistors. Capacitors are sold separately, item #0122. All RAM is tested and verified working in these kits.

This Atari ST RAM upgrade memory upgrade board will add 4MB of RAM to your Atari ST. It is compact and plugs on top of the MMU making the design ultra slim and compact. You can select 1MB or 4MB (default) via a switch if required. This gives maximum compatibility for ST software which will only run with 1MB RAM. Ideal to upgrade your 520ST,1040ST,520STF,1040STF,MEGA ST, to 4MB of RAM.

NOTE: If your shifter is not in a socket then you will need to unsolder the shifter to plug into the board. This upgrade only fits ST/F/M machines with a socketed MMU! It does not fit any other machines and does not fit machines with a SMT or non-socketed MMU! This upgrade is NOT suitable for MSTE,Falcon,STE,TT.

Cables are available to fit into MST/STM/STF/M and are now sold separately. See items #0014, #0149, #0025

IMPORTANT CHANGES SINCE 07/12/2021
The Shifter board is no longer supplied in this kit and is available separately, either as a kit #0214 or tested and assembled #0235.

Shifter adapter PCB for the 4MB MMU kit ( item #0030). This is a spare shifter PCB kit, includes PCB, capacitor, ribbon header only.

You will also need header pins item #0132 and the 3M 40 pin socket item #0108.

NOTE: From 6th July 2024, the connector and capacitor are now fitted and price adjusted accordingly.

Shifter adapter for the 4MB MMU RAM upgrade.Fully assembled. NOTE PCB Colours vary. Generally black or green.

4x 20 pin NEW DRAM CHIPS 44256BP 256x4 - NEW & TESTED. Suitable for C103175 type motherboards. Will upgrade 512K machines to 1MB (1024K).
Will also fit some MEGA ST machines such as C103277. Please check RAM is compatible before ordering!
Note: various brands or speeds of DRAM may be supplied. This in no way affects operation. Capacitors are sold separately.

4x SMT DRAM CHIPS NEW. Suitable for C103414 motherboards. Will upgrade 512K machines to 1MB (1024K).

Note: various brands or speeds of DRAM may be supplied. This in no way affects operation. Capacitors are sold separately.

STM 4MB RAM upgrade. These are difficult to fit as you need to remove the old DRAM and solder the new 4MB board in place. Currently I do not know if the shielding will fit back in place or not.
PCB has DRAM soldered and SMT parts only. You will need header pins such as item #0158. 4 wires are supplied,colours are random.

Pack of 16 100nF Axial capacitors as typically used for when upgrading the RAM chips on most motherboards.

TC511001AP-10 DRAM as used in some MEGA4 machines. Please check compatibility before ordering. Sold in a pack of 16 chips.

Original 2 chip TOS ROM for Atari STFM. Labeled for for convenience. As these ROMs are Atari original's, they do not need any wiring or pin bending to fit. They simply plug into the existing ROM sockets. Pin 1 is located where the label says HI or LO.

Original 2 chip TOS ROM for Atari STFM USED PULLS. Labeled for for convenience. As these ROM's are Atari originals, they do not need any wiring or pins bending to fit. They simply plug into the existing ROM sockets. Pin 1 is located where the label says HI or LO.

DUAL TOS Adapter pcb assembled to plug into C070789 style STFM machines. This board typically allows TOS102 & TOS104 to be used on normal C070789 style machines and TOS104 & TOS206 when used with a suitable decoder board. Board should be soldered into the motherboard otherwise the height in the sockets may not allow the shielding to fit correctly. BOARD DOES NOT INCLUDE ROM, THEY ARE SOLD SEPARATELY!

This board only fits C070789 & C103253 style motherboards (or motherboards with alike ROM layout) see these examples. C103253 C070789

UBE circuit Is no longer fitted on these boards and is no longer unavailable due to a separate board in development.

DUAL TOS Adapter pcb to plug into C070789 style STFM machines. This board typically allows TOS102 & TOS104 to be used on normal C070789 style machines and TOS104 & TOS206 when used with a suitable decoder board. Board should be soldered into the motherboard otherwise the height in the sockets may not allow the shielding to fit correctly. PCB is sold as seen in the image. TOS is selectable by a jumper on the board (not supplied) with header pins #0158), or can be fitted with a toggle switch if required, item #0010. You also need header pins item #0132 and DUALTOS ROM.

This board only fits C070789 & C103253 style motherboards (or motherboards with alike ROM layout) see these examples. C103253 C070789

Adapter pcb to plug into most MEGA ST machines which gives a jumper selectable TOS 102 & Rainbow TOS 104.

PARTS INCLUDED
PCB & SMT cap only.

PARTS NOT INCLUDED
PLCC socket #0186
Round header pins #0132
Square header pins #0158
Jumper link #0189
DUALTOS ROM #0126, #0128, #0127, #0042, #0130, #0129.

16bit DUAL TOS ROM TOS102 & TOS104. Fits my STFM & MEGA ST DUAL TOS boards.

Available until stocks are exhausted. Suggested replacement item #0053

16bit DUAL TOS ROM TOS102 & TOS104. Fits my STFM & MEGA ST DUAL TOS boards.

Available until stocks are exhausted. Suggested replacement item #0059

16bit DUAL TOS ROM TOS102 & TOS104. Fits my STFM & MEGA ST DUAL TOS boards.

Available until stocks are exhausted. Suggested replacement item #0051

6 CHIP TOS 1.04 (rainbow) to fit machines which currently have 6 chip TOS already installed. These ROMs are compatible with 16MHz boosters.

6 CHIP TOS 1.04 (rainbow) to fit machines which currently have 6 chip TOS already installed. These ROMs are compatible with 16MHz boosters.

6 CHIP TOS 1.04 (rainbow) to fit machines which currently have 6 chip TOS already installed. These ROMs are compatible with 16MHz boosters.

6 CHIP TOS 1.04 (rainbow) to fit machines which currently have 6 chip TOS already installed. These ROMs are compatible with 16MHz boosters.

6 CHIP TOS 1.04 (rainbow) to fit machines which currently have 6 chip TOS already installed. These ROMs are compatible with 16MHz boosters.

6 CHIP TOS 1.04 (rainbow) to fit machines which currently have 6 chip TOS already installed. These ROMs are compatible with 16MHz boosters.

Atari STE TOS 206 upgrade.

Atari STE TOS 206 upgrade.

Atari STE TOS 206 upgrade.

Atari STE TOS 206 upgrade.

Atari STE TOS 206 upgrade.

Atari STE TOS 206 upgrade.

STE Dual TOS Kit. TOS is selectable by a jumper on the board, or can be fitted with a toggle switch if required. This board can also be used as a "Fast TOS" upgrade with the V1.X series STE BOOSTER .

Kit needs assembling and TOS162 / TOS206 ROMs are sold separately. You will need header pins #0132, PLCC44 socket #0186, optional switch #0010.
PCB includes 2 header pins, SMT resistor,capacitor (not pre-soldered) & jumper as illustrated in the image.
This PCB is available until stock is exhausted.

Part assembled STE Dual TOS Kit as shown in image (ROM sold separately) . TOS is selectable by a jumper on the board (not supplied) with right angle pins (not yet stocked), or can be fitted with a toggle switch if required, item #0010. You also need header pins item #0132 and DUALTOS ROM, see items #0140 - #0145.

Ideal for DUALTOS boards. Not suitable for higher than 16MHz speeds.

Assembled STE Dual TOS Kit (ROM sold separately) . TOS is selectable by a jumper on the board, or can be fitted with a toggle switch (sold separately ) if required. This board can also be used as a "Fast TOS" upgrade with the V1.X STE BOOSTER.

EXTREME CARE must be taken when handling the header pins as they are fragile and can break easily.Take care removing the foam and care if inserting & removing into sockets. Item supplied may be as per image, or as per item #0232.

Part assembled TOS 104 & TOS206 decoder board. Plugs into the GLUE socket (once fully assembled). Provides a output pad to drive DUALTOS BOARDS. You will need a suitable DUALTOS board and ROM. Headers are supplied but not fitted. SMT parts are fitted as shown in the image. This board is NOT suitable for the H4,H5,MEGA platforms. Please also make sure you have suitable height clearance above the GLUE chip to install the board!

16bit DUAL TOS ROM TOS162 & TOS206.
Fits STE Dual TOS boards.

16bit DUAL TOS ROM TOS162 & TOS206.
Fits STE Dual TOS boards.

16bit DUAL TOS ROM TOS162 & TOS206.
Fits STE Dual TOS boards.

16bit DUAL TOS ROM TOS162 & TOS206. Fits STE Dual TOS boards.
1.62 was finally found but is currently untested (it does boot but no other tests have been done)

16bit DUAL TOS ROM TOS162 & TOS206.
Fits STE Dual TOS boards.

16bit DUAL TOS ROM TOS162 & TOS206.
Fits STE Dual TOS boards.

DUAL TOS 104 & 206.

NOTE: You can only use TOS206 with a suitable decoder such as item #0172

DUAL TOS 104 & 206.

NOTE: You can only use TOS206 with a suitable decoder such as item #0172

DUAL TOS 104 & 206.

NOTE: You can only use TOS206 with a suitable decoder such as item #0172

DUAL TOS 104 & 206.

NOTE: You can only use TOS206 with a suitable decoder such as item #0172

DUAL TOS 104 & 206.

NOTE: You can only use TOS206 with a suitable decoder such as item #0172

DUAL TOS 104 & 206.

NOTE: You can only use TOS206 with a suitable decoder such as item #0172

TOS4.04 FAST ROM (not cheaper/slower eprom type) . Either a update or as a replacement for Atari Falcon 030 / C-LAB machines. These ROM's are verified working with zero waitstates on the Falcon which gives a small boost overall in machine speed.

NOTE: Other Falcon ROMs may have the same number as in the machine already, or sold elsewhere, but are likely not fast enough for zero wait states. The ROMs sold in my store are always fast ROMs and now marked as 4.04F to verify.

Item not available .

New replacement reset switch to fit most Atari ST/E/F/MEGA/Falcon machines

Suitable for most Atari PSU's using a similar looking switch.

Please clean the switch solder tabs with a IPA wipe prior to soldering.

I am unable to source these any more. They are available until my personal stock is exhausted.

Really useful for switching stuff.

Omron Single Pole Single Throw (SPST), Latching Rocker Switch Panel Mount 16A @ 250VAC.A8WS-1162 ROCKER SWITCH RS number 707-3339. All are sealed in original RS packets.



Available until stocks are exhausted.

Ideal for contacts where air may cause corrosion long term. Suitable for ST PSU connections, Socketed IC/chips, PC power leads, car battery terminals etc.

Supplied in 1ml syringe with approx 1ml contents. Ready to use. Insert blue plunger. Remove red cap and fit grey syringe tip. Apply to contact surfaces and attach. Wipe excess grease off with cotton swab or tissue.

Really useful magnifier for checking for shorts between pins or checking SMT parts. It has 2 LED lights giving good light to where you want to magnify and comes in a case as shown. I use these all the time myself and find them really useful. They require 3 AAA batteries.

Very useful box of 100 IPA wipes. Ideal for cleaning PCBs,removing flux residues and dirt etc. Sizes of pads is approx 3cm square.

A lightweight de-soldering pump (solder sucker).

Universal holder for SMT building or reworking. Three pieces can be moved, you can choose the best position to holder your circuit board. Size: 8x12cm approx.

Pack of 100 black cable ties. Size approx 150mm x 3.6mm.

Precision tweezers. Approx 100mm long. Handy for doing SMT work etc.

Aluminum alloy LED torch. Approx 95x25mm. Adjustable 3watt focus. Takes a single AA battery (not supplied).

Flexible coolwhite USB LED Mini Reading Light. Useful around the home or workshop etc . Size approx. 170mm x 18mm x 8mm.

Supercool white LED mini light. Ideal for getting a little bit of extra light on your desk or in your workshop. Can be used as a nightlight or probably end up a being cat toy.

Desoldering braid offers the advantage of reduced risk of component damage, particularly during delicate operations, compared to a traditional solder sucker, as it allows for more precise and controlled removal of solder. 2mm Width 1.5M Length

Halogen-free flux offers several advantages, including environmental friendliness due to the absence of harmful halogens, reduced health risks for workers, compliance with regulations like RoHS, improved solder reliability, reduced corrosion risks, compatibility with lead-free soldering, better thermal stability, minimal impact on solderability, improved cleaning processes, high insulation resistance for enhanced long-term reliability, the formation of visually appealing bright solder joints and the ability to meet market demand for environmentally responsible products.
Retail packaged with plunger and two tips.

5inch precision light duty side cutters.

25% tin and 75% lead solder wire. 50g spool of 0.8mm with a good wetting flux core.
NOTE: Due to high lead content, recommended melting temperature 350c-450c. Do not use approx the first inch of solder as it will smoke excessively due to flux leakage.

Box of 20 50g rolls. 25% tin and 75% lead solder wire. 50g spool of 0.8mm with a good wetting flux core.
NOTE: Due to high lead content, recommended melting temperature 350c-450c. Do not use approx the first inch of solder as it will smoke excessively due to flux leakage.