Yeah this part might be annoying. Apparently the ROM-inator SIMM programmer is discontinued so I need to find another way to either write my own ROM or have someone do it for me... Thinking the LC 475 ROM is the one to do.
The special developer units with a different ROM and a video card that fits in the expansion slot would be probably easier to experiment with. These ones just kind of expect a T1/E1 service with an Oracle server at the other end. I do have some ideas I want to try though.
Also if any other set top box owners have the red ROM stick with the "LC 475 GM" label, I'd like a dump of that if possible. Or I might be willing to just buy it and/or related set top box parts.
So I've already got this booting off the drive from my LC 475... There's no video so I dropped a copy of MacCheck in the startup folder and then used command-I to bring up the brief info box and took a screenshot. Pulled it off the drive after.
Since I can't actually see what I'm doing, it's tough trying to make this thing display good detailed hardware information...
On a whim I ordered a gglabs 2mb ROM with a Quadra 840av ROM image... Unfortunately it does nothing. I was hoping it would be close enough to the AV hardware and give me TV output like on the AV Macs. Now I need to maybe figure out how to take my original STB ROM dump and add to it, then burn it to this SIMM.