ST/F/M UNIVERSAL TOS104 UPGRADE (2 or 6 chip)
ST/F/M UNIVERSAL TOS104 UPGRADE (2 or 6 chip)
Universal TOS104 upgrade kit which can be fitted to any ST/F/M which would ordinarily be stuck with 6 chip TOS. The master board has a small IC which which is normally missing on STF/M machines which takes care of part of the address decoding. As 2 address lines are missing from the ROM area then these need to be soldered to the CPU. There are also a few other wires to solder. Some machines like the STF where the ROM's are under the PSU will need the ROM sockets removing. See the website info for more information and fitting.
The ROM's used are "fast ROMs" which can be used in conjunction with the V1.5 booster.
STORE LINK
https://www.exxosforum.co.uk/atari/store2/#0085 (ROM ADAPTER)
https://www.exxosforum.co.uk/atari/store2/#0005 (V1.5 BOOSTER)
HOME PAGE
http://www.exxosforum.co.uk/atari/last/t ... m#STFV3ROM
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 ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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 ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.