TOS CHIPS what is hi or low ?

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MisterT
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TOS CHIPS what is hi or low ?

Postby MisterT » Sat Nov 04, 2006 10:31 pm

Hi, i might ask this on here, cause cant find anything on the web
might be caused by searching for the wrong keywords tho....

I have some TOS CHIPS in a IC(case) with only the numbers on it
and i know its ATARI TOS but don't know what version or what
chips are the HIGH ones and the LOW ones...

The chip numbers are:

1] CO26160-001 / RP23256 - 0150 / 7E3 15
2] CO26163-001 / RP23256 - 0153 / 7E4 17
3] CO26244-001 / RP23256 - 0156 / 7D3 A1
4] CO26245-001 / RP23256 - 0157 / 7E3 A9
5] CO26246-001 / RP23256 - 0158 / 7E3 B0
6] CO26247-001 / RP23256 - 0159 / 7E3 A9

Does anybody know wich one is

Hi-0 / Hi-1 / Hi-2 / Lo-0 / Lo-1 / Lo-2 :?:

Greetz MisterT

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Greenious
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Re: TOS CHIPS what is hi or low ?

Postby Greenious » Sat Nov 04, 2006 11:14 pm

MisterT wrote:1] CO26160-001 / RP23256 - 0150 / 7E3 15

ST U.S. TOS 1.0 256K (Hi-2) ROM
2] CO26163-001 / RP23256 - 0153 / 7E4 17

ST U.S. TOS 1.0 256K (Lo-2) ROM
3] CO26244-001 / RP23256 - 0156 / 7D3 A1
4] CO26245-001 / RP23256 - 0157 / 7E3 A9
5] CO26246-001 / RP23256 - 0158 / 7E3 B0
6] CO26247-001 / RP23256 - 0159 / 7E3 A9

Don't know, but judging by he partnumbers, I'd say it is most likely TOS 1.0 in one of the more obscure languages, however, it seems you only got 4 or the 6 roms needed to make a complete set.
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Methanoid
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Re: TOS CHIPS what is hi or low ?

Postby Methanoid » Mon Feb 12, 2018 10:45 pm

I know this is thread necro to extreme but this is the best place for my query... I have almost the exact same chips fitted in my 520STM which seems to be a 1.0 UK model. I want to upgrade to 6 (not 2) chip TOS Eproms (because I dont have pads to switch to 2 chip and dont want to have them on an adapter) but need to know which socket is which

The labels on the board are from C1 to C6 and the chips assigned like this:

C1] CO26160-001 / RP23256 - 0150 / 6A4 B0
C2] CO26244-001 / RP23256 - 0156 / 5M4 A2
C3] CO26245-001 / RP23256 - 0157 / 6A2 A3
C4] CO26163-001 / RP23256 - 0153 / 6A3 A9
C5] CO26246-001 / RP23256 - 0158 / 5M4 A2
C6] CO26247-001 / RP23256 - 0159 / 6A2 A3

My guess would be they run Hi 0 - 1 - 2 and then Lo 0 - 1 - 2 but I would appreciate someone who knows chiming in to tell me...as I have just assumed the sockets line up like an STFM and the final set of 3 digits in the table above seems to suggest some pairings.

I'll use PPera's Romsplit and get 6 Eproms burned to do the job.

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Re: TOS CHIPS what is hi or low ?

Postby wongck » Tue Feb 13, 2018 12:35 am

I am not a hardware guy but may be this upgrade TOS text may help as well.
http://atari4ever.free.fr/hardware/zip/tos104up.zip

Methanoid wrote:I'll use PPera's Romsplit and get 6 Eproms burned to do the job.

Ppera tools are good.
I am not sure if AtariZoll comes around here any more, you can ask him for help. It's he like "knows Ppera very well" :wink: :lol:
Otherwise head down to his forum at 8bitchip ( IIRC the name correctly).
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Methanoid
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Re: TOS CHIPS what is hi or low ?

Postby Methanoid » Tue Feb 13, 2018 9:07 am

Yeah I saw that patched 1.04 and its on my list.


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