Recent content by pmackinlay

I've been working on emulation of the RT PC in MAME and struggling with a similar issue. I now believe that the RT firmware and VRM disks won't "detect" a drive unless it has a valid configuration block written on the second sector of the disk. I believe this config block will be created by the...

Nice find! Unfortunately I think it's going to be difficult to get this system going. If the label on the back is correct, this is a model 6040 which has the original EDGE/1 accelerated graphics board fitted. As bear mentions, this board routes both graphic and serial signals through the P0...

I'm looking for anyone who has any of these three systems and who might be able to extract dumps of the on-board serial ROM. In brief, the 8k SROM is the first stage boot code, and its loaded into the primary instruction cache at reset. It performs some diagnostics, and loads the second stage...