i just happen to have one, new in box! i bought this years ago at Weird Stuff Warehouse when they were still around. i have no idea why, but i'm glad i did.
looks like it is essentially the same protocol as the version of the mouse (type 4?) designed for the SPARCstation. the output is open collector, inverted async serial, 5 byte.
time to build an adapter. the connector is RJ11 (technically 6P4C) but it has these pins sticking out, presumably so you can't plug it into a phone jack.
four months later i made the Video Snake Oil board that can adapt 13W3 (any type!) to VGA. you just wire up the little pads to whatever your machine needs.
i've also installed a ZuluSCSI. this neat little board is a lot cheaper than a SCSI2SD. i'm going to try and install Solaris using a CDROM ISO file. CD6_512.iso is placed on the SD card. it'll be ID 6, 512 bytes per sector.
@tubetime ahh!! Boosted because of #Forth! Haven’t thought about it for a long time. Used to use it a bunch a long time ago. Once had a function named “exist”, later wrote a loop: “do i exist” … Simple pleasures.
@tubetime once wrote a simple Forth-like language I called “go” written in 68000 assembler that interactively compiled lines directly to 68000 machine code. Ran on an original Mac 128k ;-)
@stepheneb@tubetime yeah forth is so easy to bootstrap. I think I had a small forth-ish for 6502 based on reading about it in Byte. I was so happy when Apple and Sun bundled forth as boot loaders. Also tube time should do a Sun 4/260. That was my first Unix machine, got surplus and loaded it down with internet software in mid 90s. The lights flickered when it powered on.
@stepheneb@tubetime ahh GraForth! That concept hasn’t been active in my brain for decades, and all I can concretely remember is a feeling of happiness and a love of parabolas and hyperbolas.