Identifying TOS version

[djglish]

Is there a way to identify the type of TOS in a STFM by the labeling on the chips?  I have a motherboard that was removed from a non-operating ST that has the 6 ROM TOS. I'm guessing that it is TOs 1.04 but can't run SysInfo since it is just the MB.

 

[TZJB]

11 hours ago, djglish said:

Is there a way to identify the type of TOS in a STFM by the labeling on the chips?  I have a motherboard that was removed from a non-operating ST that has the 6 ROM TOS. I'm guessing that it is TOs 1.04 but can't run SysInfo since it is just the MB.

 

 

It depends on when it was manufactured. Early ST/F were manufactured with 6 chip ROM TOS 1.0. Later STFM were manufactured with 2 chip ROM TOS 1.02 or 6 chip ROM TOS 1.02. TOS 1.04 was an upgrade normally by EPROM rather than ROM.

 

Please attach an image of your unidentified ROM chips and we can see if they can be matched against known ROM versions.

[Atari74user]

You should be able to tell via the desktop and selecting Desk Info... from the Desk menu.  You can then identify which version from the years which will display as follows:

 

TOS 1.0 - 1985

TOS 1.02 - 1986, 1987 (aka BLiTTER or Mega TOS)

TOS 1.04 - 1985, 1986, 1987, 1988, 1989 (and if in colour, will display a cyclical rainbow coloured Atari logo, hence the nickname of 'Rainbow TOS'.  There may be slight variations).

 

Point taken about MB though.

Edited May 27 by Atari74user

[djglish]

Here are some shots of the motherboard with the TOS chips and the Atari Revision number.

 

 

[kodak80]

The codes in the chips would indicate you have TOS version 1.00 US language.

 

[masteries]

On 5/28/2023 at 12:34 AM, djglish said:

Here are some shots of the motherboard with the TOS chips and the Atari Revision number.

 

 

 

 

Confirmed the data provided by Kodak80,

 

As well, this is a large list or TOS chips IC numbering:

 

Atari TOS

CO26034   (520ST U.S. Boot ROM)  
CO26035   (520ST U.S. Boot ROM)  
CA026259   ST U.S. TOS 1.0 (6 chip set)  
CO26160   ST U.S. TOS 1.0 256K (H2) ROM  
CO26161   ST U.S. TOS 1.0 256K (H1) ROM  
CO26162   ST U.S. TOS 1.0 256K (H0) ROM  
CO26163   ST U.S. TOS 1.0 256K (L2) ROM  
CO26164   ST U.S. TOS 1.0 256K (L1) ROM  
CO26165   ST U.S. TOS 1.0 256K (L0) ROM  
C101629   ST / Mega U.S. TOS 1.2 1 MEG (HI) ROM  
C101630   ST / Mega U.S. TOS 1.2 1 MEG (L0) ROM  
CO26908   ST / Mega U.S. TOS 1.2 256K (H2) ROM  
CO26909   ST / Mega U.S. TOS 1.2 256K (H1) ROM  
CO26910   ST / Mega U.S. TOS 1.2 256K (H0) ROM  
CO26911   ST / Mega U.S. TOS 1.2 256K (L2) ROM  
CO26912   ST / Mega U.S. TOS 1.2 256K (L1) ROM  
CO26913   ST / Mega U.S. TOS 1.2 256K (L0) ROM  

C101644   ST / Mega U.S. TOS 1.2 256K (H2) ROM  
C101645   ST / Mega U.S. TOS 1.2 256K (H1) ROM  
C101646   ST / Mega U.S. TOS 1.2 256K (H0) ROM  
C101647   ST / Mega U.S. TOS 1.2 256K (L2) ROM  
C101648   ST / Mega U.S. TOS 1.2 256K (L1) ROM  
C101649   ST / Mega U.S. TOS 1.2 256K (L0) ROM  
CA400406   ST / Mega U.S. TOS 1.4 (6 chip set)  
C300787 / C300635   ST / Mega U.S. TOS 1.4 256K (H2) ROM  
C300788 / C300636   ST / Mega U.S. TOS 1.4 256K (H1) ROM  
C300789 / C300637   ST / Mega U.S. TOS 1.4 256K (H0) ROM  
C300790 / C300638   ST / Mega U.S. TOS 1.4 256K (L2) ROM  
C300791 / C300639   ST / Mega U.S. TOS 1.4 256K (L1) ROM  
C300792 / C300640   ST / Mega U.S. TOS 1.4 256K (L0) ROM  
C300683   ST / Mega U.S. TOS 1.4 1 Meg (HI) ROM  
C300684   ST / Mega U.S. TOS 1.4 1 Meg (L0) ROM  
CA400406   ST / Mega U.S. TOS 1.4 (6 chip set)  
CA400407   ST / Mega U.S. TOS 1.4 (2 chip set)  
CB103119 ST / Mega French TOS 1.4 (6 chip set)
CB103120 ST / Mega Holland / Netherlands TOS 1.4 (6 chip set)
C301119   (Stacy 1.4 U.S. TOS, 32 pin 1 Meg (HI) ROM)  
C301120   (Stacy 1.4 U.S. TOS, 32 pin 1 Meg (LO) ROM)  
C301163-001   (STE U.S. TOS 1.60) (HI) 28 pin ROM)  
C301163-002   (STE U.S. TOS 1.62) (HI) 28 pin ROM)  
C301164-001   (STE U.S. TOS 1.60 (L0) 28 pin ROM)  
C301164-002   (STE U.S. TOS 1.60) (L0) 28 pin ROM)  
C302018-002   (U.S. TOS 2.05 (HI) ROM)  
C302018-003   (U.S. TOS 2.06 (HI / EE) ROM)  
C302019-002   (U.S. TOS 2.05 (L0) ROM)  
C302019-003   (U.S. TOS 2.06 (L0 / E0) ROM)  
CA400857   (U.S. TOS 2.06, 2 ROM Chip set)  
CB103023   (UK TOS 2.06, 2 ROM Chip Set)  
CB103024   (French TOS 2.06, 2 ROM Chip Set)  
CB103025   (German TOS 2.06, 2 ROM Chip Set)  
CB103026   (Italian TOS 2.06, 2 ROM Chip Set)  
CB103027   (Spanish TOS 2.06, 2 ROM Chip Set)  
CB103028   (Swiss/German TOS 2.06, 2 ROM Chip Set)  
CB103029   (Swedish TOS 2.06, 2 ROM Chip Set)  
CB103030   (Swiss/French TOS 2.06, 2 ROM Chip Set)  
C301925   (TT U.S. TOS 3.06 (EE) ROM)  
C301926   (TT U.S. TOS 3.06 (0E) ROM)  
C301927   (TT U.S. TOS 3.06 (E0) ROM)  
C301928   (TT U.S. TOS 3.06 (00) ROM)  
C301929   (TT UK TOS 3.06 (EE) ROM)  
C301930   (TT UK TOS 3.06 (0E) ROM)  
C301931   (TT UK TOS 3.06 (E0) ROM)  
C301932   (TT UK TOS 3.06 (00) ROM)  
C301937   (TT GERMAN TOS 3.06 (EE) ROM)  
C301938   (TT GERMAN TOS 3.06 (0E) ROM)  
C301939   (TT GERMAN TOS 3.06 (E0) ROM)  
C301940   (TT GERMAN TOS 3.06 (00) ROM)  
C301957   (TT SWEDISH TOS 3.06 (EE) ROM)  
C301958   (TT SWEDISH TOS 3.06 (0E) ROM)  
C301959   (TT SWEDISH TOS 3.06 (E0) ROM)  
C301960   (TT SWEDISH TOS 3.06 (00) ROM)  
CA400836   (TT U.S. TOS 3.06, 4 Chip Set)  
CB103031   (TT UK TOS 3.06, 4 Chip Set)  
CB103032   (TT German TOS 3.06, 4 Chip Set)  
CB103033   (TT Swedish TOS 3.06, 4 Chip Set)  
CB102349-X.XX   Falcon 44 pin PLCC TOS ROM (X . XX = Rev., Example 4.04)  
C101631   (Atari Transputer O.S.)  
C101632   (Atari Transputer O.S.)  

 

 

 

[djglish]

Thanks to both of you for the information.  I was surprised that the person that I got this from hadn't updated it (his S/O gave it to me after he passed away).