Search results

This is confirmed by "'PostScript' prints anything: a case history" which says "They worked in C, on a VAX 750 running Berkeley Unix, to develop the language, and they tested it on a Sun workstation driving a full-size laser printer that they borrowed from Digital Equipment Corp."

I've already looked and am pretty certain most of it was written in C

Yep, I already have those.

I took a closer look at the situation. The Weitek 8200 is a Harvard architecture so the code and data live in different address spaces. This means the 4 ROMs you posted first are the code and the second ROM is probably the data. There's a rough disassembler here...

Or actually maybe those aren't the ROMs of Ethernet board. I see two other ROM looking things in a picture. Can you post a picture of the ROMs that you dumped?

It looks ROMcostena.bin is the ROM of the Ethernet board and not the printer mainboard. What CPU does the Ethernet board use?

Al dumped them but they failed to pass the internal checksum on boot. He was going to try rereading them.

Dandu, are you able to take a high res picture of the main board of the Laserwriter Pro 810? That could help figure out how to do something useful with the ROM.

Those are "LaserWriter Plus Printer 512k Rev 47" ROMs. A list of ROMs is here: http://www.bitsavers.org/pdf/apple/printers/laserwriter/LaserWriter_ROMs.txt I don't believe there are dumps of that particular set so it would be valuable if you could dump them.

Yeah, I've been able to work with the maintainer to source a couple of ROMs. It looks finding an original Rev1 ROM is going to be pretty difficult.

You'd need to read the PostScript to figure out what it's trying to do. It looks like the StyleWriter II doesn't support PostScript so it's less interesting to me. No, MAME is running on a regular computer. Currently the LaserWriter emulation lets you connect to the virtual serial port of the...

I've attached what I'm pretty sure is the IIg test page. It will need some manual modification to get it to render in standard postscript renderers because it use some device specific stuff.

Thanks for that ROM. It looks like the IIg software is a lot different from the II NT software so it won't be easy to get running in MAME. I haven't hooked up video yet, so you can't see the output from the printer. However, there's an interactive PostScript shell that you can run PostScript...

I believe the LaserWriter Plus ROM set was (342-0089-A - 342-0104-A). I'm definitely interested in dumps of those if anyone still has them.

I recently added support for running these LaserWriter ROM dumps to MAME. The ROM dumps on that page are a revision with PostScript Version 47.0 from 1986-1987. I'm interested in getting the earlier versions working in MAME as well. Does anyone have any of the original ROMs (PostScript Version...