General Category > LisaList2
Does anyone have a spare Lisa motherboard?
Lisa2:
--- Quote from: AlexTheCat123 on November 18, 2019, 08:29:15 pm ---It does not show the ROM version in the corner of the screen like I think it is supposed to.
--- End quote ---
The display of ROM version was added around Rev. D. It may be possible this is an early "twiggy" ROM that does not display the revision. Does your IO ROM have a sticker on it?
Rick
AlexTheCat123:
The I/O ROM is from Sun Remarketing to allow the Lisa to work with the 800K drive that is installed. Why would the Lisa have the Sun I/O ROM combined with Lisa 1 CPU ROMs? This just seems a bit weird. I am guessing that I will have to replace the CPU ROMs in order to get it working properly, right? Also, can I run LOS with the Sun Remarketing I/O ROM or will I have to swap it out too?
rayarachelian:
Off the top of my head, D should be compatible with both Lisa 1 and Lisa 2, so it should be fine. The 800K ROMs should work with Lisa Office System as well.
AlexTheCat123:
I think that I have revision C, not revision D. From what I have read, revision C is only compatible with the Lisa 1. That would explain why it shows two drives under the Startup From menu instead of one.
rayarachelian:
--- Quote from: AlexTheCat123 on November 19, 2019, 04:26:21 pm ---I think that I have revision C, not revision D. From what I have read, revision C is only compatible with the Lisa 1. That would explain why it shows two drives under the Startup From menu instead of one.
--- End quote ---
That's pretty rare if it is an original C ROM, well that is, rare in the sense of an original ROM from Apple back from 1982 and has the original sticker on it. All the ROMs are available on bitsavers and if you have a an EEPROM programmer, you can burn your own, if not I'd contact John at Vintage Micros for a set.
Fair enough, though, I'd still worry about fixing the rest of the hardware first before worrying too much about the ROM version. Any luck with the video board and other related stuff?
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