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CO70789 - 001 REV. C1
Posted: 04 Sep 2018 19:53
by sandord
Re: CO70789 - 001 REV. C1
Posted: 04 Sep 2018 19:55
by sandord
I wonder what this is about:
1.jpg
Re: CO70789 - 001 REV. C1
Posted: 04 Sep 2018 19:56
by sandord
Unlabeled TOS chips is also something I haven't seen before:
2.jpg
Re: CO70789 - 001 REV. C1
Posted: 04 Sep 2018 21:51
by exxos
sandord wrote: 04 Sep 2018 19:55
I wonder what this is about:
Its common bodge.. I think Atari missed 5V off a chip or something.. did look into it but cant exactly remember.
Re: CO70789 - 001 REV. C1
Posted: 04 Sep 2018 22:25
by rubber_jonnie
I think it needs a blitter ;)
Re: CO70789 - 001 REV. C1
Posted: 04 Sep 2018 22:27
by sandord
It sure does 😉😉
Re: CO70789 - 001 REV. C1
Posted: 05 Sep 2018 08:36
by Tophe38
Your TOS rom are standard part number. It's simply mask rom, not (homemade) EPROM ;)
Tophe
Re: CO70789 - 001 REV. C1
Posted: 05 Sep 2018 09:12
by sandord
Tophe38 wrote: 05 Sep 2018 08:36
Your TOS rom are standard part number. It's simply mask rom, not (homemade) EPROM ;)
Tophe
So that must mean that most roms I have seen were upgrades.
Re: CO70789 - 001 REV. C1
Posted: 07 Sep 2018 21:46
by Tophe38
If it's EPROM with sticker on glass, yes it is.
It's easy and cheap and legal. I have done it on all my STE, even with a switch to change between 1.62 and 2.06.
Re: CO70789 - 001 REV. C1
Posted: 01 Sep 2019 16:29
by JezC
Just noticed that one of my 1040 STFs has this PCB but has TOS 1.00 in 6x ROMs fitted...all my other STFs have the C707523 motherboards.
That's the first of my C070789 boards without the modulator & with TOS 1.00 (the others all have 2x chip TOS 1.02) so I'm guessing that this was probably a late 1040 STF (shortly before the 1040 STFM was released)?
It's still a long eject button model.
The only problem with the system is that the floppy eject spring seems to be weak (so the drive only stays in the eject position for a few seconds & then it sticks the eject button out again)...a bit of a hassle but nothing too serious (just yet).