TF536 - Atari firmware - Rev2 TF536

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stephen_usher
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Re: TF536 - Atari firmware - Rev2 TF536

Post by stephen_usher »

Well, the latest MAPROM_C.PRG does give quite a speed boost and the floppy works. :dualthumbup:
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Re: TF536 - Atari firmware - Rev2 TF536

Post by exxos »

stephen_usher wrote: Mon May 23, 2022 9:08 pm Well, the latest MAPROM_C.PRG does give quite a speed boost and the floppy works. :dualthumbup:
:bravo: :girldance: :girldance:
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Re: TF536 - Atari firmware - Rev2 TF536

Post by stephen_usher »

Hmm... Floppy formatting isn't working properly.

The format process is incredibly slow (EmuTOS 1.0) and then reports that 0 bytes are available.

Switching over to TOS 1.04 and the 68000 and the system formats fine.

Similarly, with MAPROM.PRG, formatting is fine.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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Re: TF536 - Atari firmware - Rev2 TF536

Post by exxos »

MAPROM_C version 22. REV5 ST536 TOS :

FCOPYIII formats 1.88MB fine.

GEM 720K:

IMG_0598.JPG
IMG_0598.JPG (69.26 KiB) Viewed 1384 times

EMUTOS 1.1.1 - but oddly MAPROM doesn't seem to be doing anything with it now :shrug: ROM doesn't seem to get copied to alt-ram. Also oddly EMUTOS is reporting TTram in KB not MB . It might not being launched from ST536 TOS which stuff already allocated :shrug:

IMG_0599.JPG
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: TF536 - Atari firmware - Rev2 TF536

Post by stephen_usher »

If you’re running the .PRG version of EmuTOS then it’s running in RAM and not ROM and hence MAPROM won’t be able to do anything, surely?
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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Re: TF536 - Atari firmware - Rev2 TF536

Post by exxos »

MAPROM should still enable the caches AFAIK, which is where most of the problems are. All I can say is with my setup it all works and think Anders had it working fine with EMUTOS.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
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Re: TF536 - Atari firmware - Rev2 TF536

Post by stephen_usher »

I’ve just tried under TOS 2.06 and floppy formatting works. Maybe it’s a problem with EmuTOS 1.0
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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Re: TF536 - Atari firmware - Rev2 TF536

Post by agranlund »

Steve wrote: Sat May 14, 2022 8:21 pm this is the fastest recorded Frontbench score on a regular tf536...
Hmmn.. I see your 3211.. and raise with my current development firmware in "ludicrous speed" :lol:

IMG_6018.jpg
IMG_6018.jpg (57.93 KiB) Viewed 1314 times

Frontbench in TT-RAM: 4108
Frontbench in ST-RAM: 4066 (*)

(*) actually in a huge L2 cache but as far as the Atari is concerned it's addressing st-ram.
Speed of ST-RAM according to Memspeed:

Code: Select all

Read: 47.1 MB/s (L1) 31.6 MB/s (L2)
Write: 3.8 MB/s (L1)  3.8 MB/s (L2)
The actual reason for this was actually something completely different :lol:
I got fed up with burning ROMs and wanted to load and reboot into rom images from disk without touching the PMMU.
So I brought back an old ST-RAM cache experiment and updated it to support ROMs too.

Whether or not this will reach a release or not depends on if/when support software is done.
It's just a crude commandline tool at the moment and it would need to be something more user friendly.
Probably also integrate the existing maprom functionality into the same program -- would be nice to replace maprom with something written in C anyway.

The pro's:
- It can shadow ST-RAM in fastram
- It can shadow ROM in fastram
- Rom images can be loaded from disk into the rom-shadow.
Without using the PMMU, which is important for being able to cold boot into another soft-loaded rom.

The con's:
- 6MB is reserved by the firmware. A 64MB card will show 58MB available.
- ST-RAM shadow will not work if using DMA devices, and I don't really have any intentions of trying to remedy that.
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Re: TF536 - Atari firmware - Rev2 TF536

Post by Steve »

dangit ;D
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Re: TF536 - Atari firmware - Rev2 TF536

Post by Badwolf »

agranlund wrote: Thu May 26, 2022 7:56 pm - ST-RAM shadow will not work if using DMA devices, and I don't really have any intentions of trying to remedy that.
Nicely done! That damed pesky DMA strikes again.

All loading done from IDE, I presume?

BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
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