True 16MHz Mode
Posted: Wed May 01, 2019 11:35 pm
Exxos and I have been discussing boosting the STF Remake. In his grand plan the remake is designed so that we can run the ST in what I like to call the True 16MHz Mode.
A lot of the boosters out there are limited to boosting the CPU and ROM only as there are limitations on the RAM etc on the ST motherboard.
The STF Remake has been designed so that we can actually boost the CPU, ROM, RAM and Blitter together. Working with exxos I have managed to get my STF Remake to operate in this mode with only two 74LS chips I had lying around.
So currently my STF Remake has the following:
Boosted - CPU (16MHz), ROM (16MHz), RAM (16MHz) and Blitter (16MHz)
Stock - MFP (4MHz), GLUE (8MHz), 1772 (8MHz) and DMA (8MHz)
Running GEMBench, with the Blitter disabled, against a stock STFM score its rocking pretty much 200% across the board, hence the True 16MHz Mode term.
Now this is where things start to get interesting as turning on the Blitter, which is also in 16MHz mode, which AFAIK is the only one running at that speed currently on the planet. We get some interesting benchmarks which blow a lot of the scores away in the benchmark section in the forum for boosted STFM.
Overall = 283% and look at that Blitter score of 1141%
exxos on your grand plan coming to fruition. Roll on the 50MHz STF Remake
All you STF Remaker's out there instructions will follow soon on how you too can get your ALPHA boards into this mode.
A lot of the boosters out there are limited to boosting the CPU and ROM only as there are limitations on the RAM etc on the ST motherboard.
The STF Remake has been designed so that we can actually boost the CPU, ROM, RAM and Blitter together. Working with exxos I have managed to get my STF Remake to operate in this mode with only two 74LS chips I had lying around.
So currently my STF Remake has the following:
Boosted - CPU (16MHz), ROM (16MHz), RAM (16MHz) and Blitter (16MHz)
Stock - MFP (4MHz), GLUE (8MHz), 1772 (8MHz) and DMA (8MHz)
Running GEMBench, with the Blitter disabled, against a stock STFM score its rocking pretty much 200% across the board, hence the True 16MHz Mode term.
Now this is where things start to get interesting as turning on the Blitter, which is also in 16MHz mode, which AFAIK is the only one running at that speed currently on the planet. We get some interesting benchmarks which blow a lot of the scores away in the benchmark section in the forum for boosted STFM.
Overall = 283% and look at that Blitter score of 1141%
exxos on your grand plan coming to fruition. Roll on the 50MHz STF Remake
All you STF Remaker's out there instructions will follow soon on how you too can get your ALPHA boards into this mode.