Oddbean new post about login | logout @8ff2c4ef You got further than I did with that card. I just pulled my Lisa off the shelf and booted it up to make sure everything is still working (it is), I'll try the Sun card again and see exactly what it is doing.
@8ff2c4ef I get two short beeps and a scrambled display with the SunRem card in slot 1.
@96d079fd Bummer! Same tone (lo)? Is the card fully populated with SIMMs? Is display “static” garbage or is it constantly moving?
@8ff2c4ef They're the same tone - I'm not sure if it's hi or lo without a note to compare to (I would have guessed hi). The card is fully populated; I tried 120ns and 80ns sets (one set was provided, the other I bought after). The garbage is static.
@96d079fd You have a 512K card to try in another slot with the 2MB card? I tried the 1MB setting with four SIMMs and got what you described. Only when I added four more SIMMs (and not adding jumpers for banks 2 and 3) did I get a picture. There’s something weird happening. I have a video in this thread (starts with color bars) that has both lo and hi tones for comparison.
@8ff2c4ef Yep, I have two 512K cards I normally use. I put one of those in slot 2, removed the mem 4 SIMMs and removed the mem 4 jumper and I get hi/lo with code 45 and the startup screen. https://files.mastodon.social/media_attachments/files/111/131/651/925/395/727/original/8ae2101f939f18fc.jpeg
@96d079fd Oh wow this is interesting— a bus error as well! I’m curious if there’s a fault with these boards? Does yours have a white silkscreen ID front lower left “42779GY151-190514” ? I think that is a JLCPCB order code.
@8ff2c4ef It does indeed. And here I thought VintageMicros was going through NOS on there. :)
@96d079fd I have no idea, just that our boards are from the same batch is all I can say at this point. That could mean that our boards have the same issue. More testing to be done! I’m going to try to get access to a working Lisa, hopefully tomorrow.
