exxos's Atari, Amiga & retro forum

ahh right ok no i didnt know it decoded the 2.06 rom space thanks for that

where is the roms section as i cant see any download section, sorry just my head done in as this is built but wont work, not sure what i have done or what the fix is so just trying all avenues only other thing is to ask if someone would take a look at the board for me

ROMs are here... https://www.exxosforum.co.uk/forum/viewt ... f=25&t=116

exxos wrote: 15 Feb 2021 15:54 ROMs are here... https://www.exxosforum.co.uk/forum/viewt ... f=25&t=116

thank you

Here's a link to my TOS 1.04(IDE Patched)/TOS 2.06 dual ROM that I use in my IDE V1.1 R1C adapters.

https://www.exxosforum.co.uk/forum/viewt ... =40#p38744

That is a byte-swapped version, so you really need to test with your own programmer to make sure that it will work for you. I use a TL866 II Pro. For the reason that the OTP 27C4096 EPROMS are quite expensive I recommend sourcing some erasable versions so you can test, and if you stuff it up, just erase and retry. At £5-£10 a go, I won't risk bricking my 27C4096s.

Please do read what I've written about byte-swapping as it is an important consideration when burning your ROM.

what would an erasable version be would they be the 28 or 29 version of them?

thecaver99 wrote: 17 Feb 2021 16:15 what would an erasable version be would they be the 28 or 29 version of them?

No, it's still a 27C4096, but you need to include 'erasable' in your searches. They have a quartz window in the top, are generally ceramic packaging rather then plastic, and you pop them into a UV eraser to wipe them.

Something like this: https://www.ebay.co.uk/itm/1PCS-5PCS-HN ... SwOhlbbFCO

You may be able to find an EEPROM version of them which is a plastic package and allows for them to be erased electrically.

The difference between EPROM & EEPROM is described pretty well here: https://www.geeksforgeeks.org/differenc ... 0contents.

thanks thats great found them and yes i know eprom and eeprom and proms etc, i will order one of them as if will make it easier for testing.

on second thoughts would 0050 "DUAL TOS ROM 1.04/2.06 ENGLISH" in the we store be the right programmed rom for the board?

thecaver99 wrote: 05 May 2021 12:55 on second thoughts would 0050 "DUAL TOS ROM 1.04/2.06 ENGLISH" in the we store be the right programmed rom for the board?

I use this one (1.04/2.06) and it works a treat: https://www.exxosforum.co.uk/forum/viewt ... =40#p38744

Just make sure you know if it needs to be byteswapped or not for your burner or that you have erasable ROMs as if you get it wrong you can brick it.