STM C070243 Rev F Rom locations.

Upgrade or replace the ROM.
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PhilC
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STM C070243 Rev F Rom locations.

Post by PhilC »

Just thought I'd put this here for a quick visual indication of the tos1.04 6 rom locations in case anyone else needs to know.

U2 HI2
U3 HI1
U4 HI0
U5 LO2
U6 LO1
U7 LO0

Or like this
20200813_133931.jpg
20200813_133931.jpg (203.62 KiB) Viewed 2384 times
If it ain't broke, test it to Destruction.
davemacblack
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Re: STM C070243 Rev F Rom locations.

Post by davemacblack »

This is exactly what I did on my 260ST yesterday - upgrade from 6x original ROM TOS 1.0 to 6x 27C256 TOS 1.04 :-). Thanks to the fact that it was a replacement of ROM chips 1: 1, everything went well. I also tried TOS 1.04 on 2x 27C512 in positions Lo0 and Hi0, but it didn't work for me. I also tried to return this machine to prehistoric times BOOTLOAD ROM with 2x 27C64, but also without success. Does anyone know if there is also a solder box on the board that will change the ROM configuration, such as STE W101, W102 and W103 and MSTE W201, W202 and W203?
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Re: STM C070243 Rev F Rom locations.

Post by exxos »

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 ?
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