TOS UK 1.41 ROMs Image File

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WolfMax
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TOS UK 1.41 ROMs Image File

Postby WolfMax » Sun Feb 15, 2015 1:36 pm

Hi All

This thread is to move a topic from my 'Floppy 1.44 Mb HD module' thread and add a bit more detail.

I have an image file of the below TOS ROMs:

Image

As you can see, they are ether 'burn once' PROMs or EEPROMs (no UV windows). On which I'm guessing the .41 version number means it's a patched 1.04 (System Info shows the TOS version to be 1.04 dated 06-04-1989, GEM is 0.15 from the same date and AES is 1.40 no date).

The motherboard is a C070523-001 Rev D (I have no idea of the year of manufacture) but it is an STFM board. However, there is no Blitter chip and no place to fit one, no DMA sound (according to System Info) and no 'Cookie-Jar' whatever the hell that is (I'll do a search)!!

The ROMs were fitted by an Atari specialist shop as part of a 1.44Mb HD floppy upgrade, along with a 1990 Atari branded C302096-001 "Ajax" chip (TC24SC060AP-002) and an Elco HD module (thanks Ralcool for the info on that). From my vague recollection, the patching was to improve the HD floppy access but in what way I have no idea (did I mention my recollection was vague :? ).

If anyone is interested in a copy of the image file for research purposes/historical value, let me know by PM (unless of course, I'm not allowed to distribute the file in which case all this is moot). :shrug:
Cheers

Colin

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Re: TOS UK 1.41 ROMs Image File

Postby iceman » Sun Feb 15, 2015 2:51 pm

All I can help you with is the 'cookie jar'.

It's an area in memory that you can put 'cookies' (small string/value pairs that all programs can access) into. For example, you can read the _MCH cookie IIRC and find out what machine you are running on.

I don't know how a machine could not have a cookie jar though.
Atarian since 1989. Atari 1040STFM, 4MB 520STe with UltraSatan and Unitor N, A dodgy 1 MBSTe that bombs out after a few minutes, and a 14MB 48MHz Falcon 030 with NetUSBee and Soundpool 8 channel DAC. Plus my new MiST!

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Re: TOS UK 1.41 ROMs Image File

Postby WolfMax » Thu Feb 19, 2015 12:47 pm

Thanks for the info on the 'Cookie Jar'. As to not knowing how it can't have one, I can only go by what the SysInfo app by Thorsten Bergner said is in my system.
Cheers

Colin

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Re: TOS UK 1.41 ROMs Image File

Postby mfro » Thu Feb 19, 2015 1:07 pm

iceman wrote:I don't know how a machine could not have a cookie jar though.


Early ST's didn't have that.
Everything before TOS 1.06 doesn't initialise the system variable _p_cookie ($5a0) - or better, initialises it to 0. Nevertheless, the mechanism is already there and usable with TSR programs.

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Re: TOS UK 1.41 ROMs Image File

Postby junosix » Thu Feb 19, 2015 4:05 pm

Nice find! According to the Atari A-Z Book by Mark S Baines, TOS 1.41 is a third-party modification to TOS rather than an official Atari revision, but it would still be interesting to know what the differences are.

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Re: TOS UK 1.41 ROMs Image File

Postby exxos » Thu Feb 19, 2015 4:40 pm

http://www.atari-wiki.com/index.php/History_of_Atari_TOS
According to the wiki

Kaos TOS Andreas Kromke 1.4.1 All STs and compatibles Early single-tasking TOS replacement, originally based on a large and complex patch set for Atari TOS 1.4. Supplied on ROM as "KAOS030" and as a disk-loaded version, complete with its own desktop, KaosDesk. Faster and less bug-ridden, but incompatible with TT and Falcon. Supplied with some 68030 accelerator boards. Development stopped after release of TOS 2.06. Some parts (such as MCMD CLI shell) reused in MagiC, developed by the same author.
4MB STFM 1.44 FD- VELOCE+ 020 STE - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - various clutter

http://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
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WolfMax
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Re: TOS UK 1.41 ROMs Image File

Postby WolfMax » Thu Feb 19, 2015 5:42 pm

junosix wrote:Nice find! According to the Atari A-Z Book by Mark S Baines, TOS 1.41 is a third-party modification to TOS rather than an official Atari revision, but it would still be interesting to know what the differences are.


Copy of it can be found here: viewtopic.php?f=15&t=27597#p268419
Cheers

Colin

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Re: TOS UK 1.41 ROMs Image File

Postby AtariZoll » Thu Feb 19, 2015 7:09 pm

I compared your TOS 1.41 dump with original UK TOS 1.04. There are few bytes different on couple locations.
Because HD floppy expansion needs setting steprate of 6 mS to WDC (floppy controller chip) when it runs at 16 MHz - double rate than normal - with that it will perform steps with 3 mS rate actually - since WDC1772 is designed for 8 MHz clock .
Myself did similar TOS patch in 1991, when made HD floppy circuit.
And this patched TOS has nothing with KAOS TOS.
Just to add that blitter was present only in Mega ST and some later 1040 STFM machines. In STE it is integrated with some other functions.
DMA sound exists only in STE and TT, Falcon. HD floppy was built in some Mega STE-s, TT, Falcon. But they have newer TOS versions, of course.
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Re: TOS UK 1.41 ROMs Image File

Postby WolfMax » Tue Feb 24, 2015 4:53 pm

Thanks Atarizoll

So I was right in thinking my 1.41 version has been patched to allow the double step rate. And you say it is not KAOS TOS. Hmm, Atari wiki needs an update to their 1.41 entry ;)
Cheers

Colin

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