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My man hoarding again! Welcome back :p

Thank you! It was worth it. People are already working with it There is a Snow PR as well. Thanks! KB030514 is the one I remembered. Plenty of other info at this archive... like this driver was created for System 4.3. Might explain some of the spaghetti code

Thank you, very much appreciated I've tested three of them for this work just to double there isn't any obvious differences: - LaserWriter IISC, (from a 6.0.5) - Personal LW SC 7.0.1, which is a standalone floppy - Personal LaserWriter SC, from 7.5.0 (actual version 7.0.1 as well) Starting...

Repo is giving me a 404. Was that moved somewhere or is it GitHub aiming for 80% uptime ?

Adding more info. Typical sequence A typical printing sequence will look like below. Here is a the driver printing a SimpleText file with the following content: INQUIRY [12 00 00 00 05 00] INQUIRY ⇾ DataIn [02 00 … FE 20 27 20 FF] INQUIRY [12 00 00 00 24 00] INQUIRY ⇾ DataIn [02 00 … FE 20 27...

They did try at some point with the NT board, but it was by emulating the controller board. Both boards differs in significant ways (IISC being SCSI + "QuickDraw", NT being Serial + Postscript for a start), but will share unsorted hardware notes if needed. (I'm stuck at recreating the HAL...

Looks like you did a lot of testing. Do you have OG ROMs ?

Hello everyone, Got sidetracked since a few month, ended up doing this... Decoded most of the LaserWriter IISC SCSI protocol and figured I should post it here, it's probably interesting for the Snow or PiSCSI team (poke @slipperygrey) I do have a complete Snow implementation as well, please...

Offtopic, now I kinda understand why you made 5 Design68s :) Anyway, nice job, looks very useful

Offtopic but very useful writeup!

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...