Recent content by demik

Just as a note if other people end up there: You cannot select a IIsc or Personal LaserWriter SC in the chooser list (on the right, where AppleShare servers pops up) The list doesn't work and is unused. What the driver will to is actually scan your SCSI bus and use the first compatible printer...

Hello, This is a far shot but: Got three IIsc logic boards, and I'm unable to select the printer on the chooser. I think I got the right driver (LaserWriter IIsc from early system 6, Personal LW SC for late versions and System 7). What's happening: the boards do boot up and after about 10...

Yes that's what's finicky about this board. That RC circuit. I mean it's Voodoo level: in a couple of boards I had to "pair" the ATFs as well (like you do on audio amps), in order to have the correct sink/source capabilities so the RC circuit would do the correct timing. The orignal EP320 were...

Well they are part of the SCSI termination circuit. You are supposed to have termination on both ends (the host and the last device). However they are specific cases where you can commit one of them, and have only one device do all the work (usually an active terminator does work fine with short...

Answering this and your message in the other thread. You are right about power delivery, it can induce issues (see my post above in this page). The Original board had provisioning for SCSI power but somehow they didn't include it in the final version (too much issues ?) Having an external...

Wonderfull achievement :) DCD support coming or the logic can't fit in the ATF ?

Yep that's a possibility as well

Thank you for this! Very useful I had to use the previous version of FixupBSR6 from this commit because the last one gives me some error FixupBSR6.py> Running... Traceback (most recent call last): File "ghidra_scripts/FixupBSR6.py", line 137, in <module> fixupBSR6(ip) ^^^^^^^^^...

Hello, While working with LW ROMs, I noticed there is an hidden image in the IIsc ROM. It's not really visible on a classic CLI hex editor but if you mess with sizes it starts to stand out. It's a RAW black and white MSB first. @Danamania helped to recreate the image faster than I could mess...

Read the whole thread, interesting. About Valkyrie performance, if you look at the Valkyrie DeclROM on a 5200/6200, there is 68k in there. So part of it is emulated. It may be just for basic stuff like resolutions listing or initial bringup, or it could be some other advanced routines as well...

AFAIK there is no Linux for PPC upgraded blackbirds. Mainstream Linux PPC do expect some sort of OpenFirmware. They were patches to run on OF-less PowerMacs for Linux Kernel 2.4 back then, but it didn't include the PB540

Can confirm this is a good idea and they work great. Used them in a few of my 030 schenanigans. Overall, nice progress !

Only the W65C22N, the W65C22S is still produced in PLCC form (for now). I've tested one in a 512ke bench board, it works fine except reading the 1Hz tick from the RTC. It isn't behaving as expected. Think it's juste one pull-up away but didn't had time to test it Don't have any SE/30 bench...

If the daughtercard is this one Then there is high chances that the ribbon cable is broken

Build by @Jockelill with the red aluminium case