TF1260 Open File Release

Help & news on accelerators from TF, Amiga, Atari, CD32 etc

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8 Bit Dreams
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Re: TF1260 Open File Release

Post by 8 Bit Dreams »

Yepp, ADJ trace is cutted and 3.3V connected instead, getting 3.28V from the regulator, should be fine..
tried several CF cards - getting same behavior..

Need to burn some DiagROMs now, stumbled on this:

IMG_20211031_171755.jpg
IMG_20211031_171755.jpg (56.17 KiB) Viewed 3654 times

These EPROMS are repainted and reprinted MX27C4100's 🤕
Any reason to do that? 🤔
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arkadiusz.makarenko
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Re: TF1260 Open File Release

Post by arkadiusz.makarenko »

8 Bit Dreams wrote: Sun Nov 14, 2021 11:00 am Yepp, ADJ trace is cutted and 3.3V connected instead, getting 3.28V from the regulator, should be fine..
tried several CF cards - getting same behavior..

Need to burn some DiagROMs now, stumbled on this:
IMG_20211031_171755.jpg
These EPROMS are repainted and reprinted MX27C4100's 🤕
Any reason to do that? 🤔
Got exactly the same stuff instead of AMD. Irony is that those repainted chips are faster!
Do not trust people. They are capable of greatness.
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8 Bit Dreams
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Re: TF1260 Open File Release

Post by 8 Bit Dreams »

Ok, reporting success! Design is surely working! My issue was BUS Transceivers - changed these out and card booted without any issues:

16368916838832049793175454009353.jpg
16368916838832049793175454009353.jpg (326.6 KiB) Viewed 3640 times
16368916507093362475247137816336.jpg
16368916507093362475247137816336.jpg (324.22 KiB) Viewed 3640 times

Is it locked to 50MHz?
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supaduper
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Re: TF1260 Open File Release

Post by supaduper »

Not Locked to 50mhz it's CPU dependent on overclockable CPU, but 80mhz is most you will get at the moment
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8 Bit Dreams
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Re: TF1260 Open File Release

Post by 8 Bit Dreams »

Ok, tried several settings - can't go above 75MHz,
getting freeze on 79,5 immediately, but hey, that's impressive anyway! Very pleased how smooth it works!
Thank You very much Mr.Leary! :P
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matt020
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Re: TF1260 Open File Release

Post by matt020 »

8 Bit Dreams wrote: Sun Nov 14, 2021 12:08 pm Is it locked to 50MHz?
Add heat sinks to the CPLD's and CPU and you will get 62.5mhz, maybe even 75mhz.
I have added a laptop cpu blower fan, it lays flat on the A1200 motherboard and blows air over the CPLD's and CPU. It's stable at 75mhz all day.
terriblefire
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Re: TF1260 Open File Release

Post by terriblefire »

Yeah that firmware design pushes the CPLDs over their design limits .
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
markus0321
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Re: TF1260 Open File Release

Post by markus0321 »

I assembled 3 TF1260 cards for my three Amiga 1200 computers.
I programmed them with the BETA firmware from the file "tf1260r1_2021_09_07_999.zip". In one card I soldered 128 RAM in the other two 64MB it looks like it is working properly.
I have a problem with the "cpuspeed" program. When I try to increase the speed to 62.5MHz, the cards that have 64MB soldered freeze the computer. The card with 128MB soldered works fine, but reading errors appear when reading files from the CF card. The parts I used as ram memory: 128MB - MT48LC32M16A2P-75IT, 64MB - MT48LC16M16A2-75 and MT48LC16M16A2-6. I changed the CPLD circuits a few different pieces and I have the same symptoms all the time.
Is this a problem with my soldering or are the memory chips wrong?
terriblefire
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Re: TF1260 Open File Release

Post by terriblefire »

The TF1260 works at 50Mhz.. everything above is a bonus. Its the CPLDs that are the limit with the current firmware design. As i've mentioned about 5000 times there is a new one coming. Patience.

EDIT: For the love of <insert your preferred deity here> do not rip apart a working card just because it doesn't overclock.
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
PaulJ_2.0
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Re: TF1260 Open File Release

Post by PaulJ_2.0 »

terriblefire wrote: Tue Nov 16, 2021 9:05 am EDIT: For the love of Jason Donovan do not rip apart a working card just because it doesn't overclock.
Now now, Jason has a lot on his hands. It's unfair to burden him.
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