I am building an Atari ST ROM cartridge for the 520ST/1040ST/MEGA ST models.
Atari offered a diagnostic cartridge for systemcheck and repairing STs.
I want to build such a cartridge myself and need some information about it:
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Rat boy wrote:From first views, seems like a version that we used back in the day..so excellent to get one working! Any screen shots to confirm? Pretty basic, and 'down to earth' testing, but it does what it says on the tin! bypasses many system operations on a 'dead' system...so very useful.

karlm wrote:If someone were to make up some I am sure some people would be interested ...
It would be neat if you could use say a pair of 64k or even 128k roms and have a cart that was switchable between ST / STE / Mega / TT etc. Was there a Falcon diagnostic cart or am I dreaming there?
(yes I know the cartridge port is limited to a certain address range but you can set it up like the switchable TOS ...)
so many ideas so little time and expertise
karlm.




Techman wrote:i hvae those roms in my collection...

Rat boy wrote:AFAIK, the serial/parallel loopback tests are a simple err..loopback test, and can be bypassed anyways...
But looking at the pinouts for those posts, pretty easy to figure out the wiring..
Seriously - unless you have an internal issue with these ports, then the tests are 99.9% useless...OK it fails..no biggie.
Show me someone that had a serious internal parallel issue on their Atari. Never happened.
Otherwise the mem and processor test are VERY useful. Remember I used this cart DAILY. Repairing the computers that was sent to ME to FIX. Never had a parallel/serial problem though..



muguk wrote:The Wiki awaits when you have more news to tell us

gogo wrote:Hello,
For my first post, I can redirect you to a french page about the Atati test kit.
You'll find ROMs for almost all Ataris but the Falcon.
http://www.hobby-electronique.com/Projets/ATARI/TestKit/tabid/88/Default.aspx

gogo wrote:Hello,
For my first post, I can redirect you to a french page about the Atati test kit.
You'll find ROMs for almost all Ataris but the Falcon.
http://www.hobby-electronique.com/Projets/ATARI/TestKit/tabid/88/Default.aspx



Chandler wrote:...
PS: i have one of those FALCON test cartridges too![]()
dunno if it works though as i've never used it, if you need any info from it i don't mind helping as someone has already opened it in the past
The Atari ST Rom Module
Due to some recent interest in the Steem mailing list, I decided to post whatever info I have on the Atari ROM module I own. In the mailing list it was noted that the german magazine c't once had such a module, but I'm not sure whether this is the one or not. I did, however, win it in an auction on ebay.de, so it just might be it. If Matthias Arndt can scan the schematics from the ancient magazine we could confirm it...
The board plugs into the side cartridge slot of the Atari ST. It is not pass-through, i.e. it is the last device you can plug in the cartridge slot chain. The design is very, very simple, as you can see. It holds an EPROM labeled "ROMOS4 v.8.0" but I'm not sure about its contents, as I can't find my STe right now (gee, I really wonder where it went).
There's a small red switch on the side which can be used to turn the board off without removing it from the cartridge slot.
The maximum memory size it can hold is, AFAIK, 128kB, since there's only 128k od address space in the ST memory map. I do guess there's the possibility of bank switching, but you'd need some bank switching software.
The EPROM is, of course, read-only, so the whole thing can only be used to quickly access frequently-used, small programs. I'm not sure if you can autorun its contents, in which case you could run accessories of it, but anyhow. The module does have a booting sector, however, so maybe something could be done with it.
The only way to write onto the EPROM is first erase it (remove the small silver sticker at the middle; expose the chip to UV light for approximately 10 minutes) and then use an EPROM burner.
There's a driver that comes with the module, ROMDSK. However you can make it auto-loadable by injecting it into the first 512 bytes of the file that is to be burned onto the EPROM.
The module's contents, once loaded, are mapperd into the $00FA0000-$00FBFFFF (decimal 16384000 - 16515071) Atari memory area.
That's about it, if you need any more info, lemme know...


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