Wanted: ASM-48 for Intellec MDS-2

Hi, I'm going to use the ASM48 assembler to write a firmware from scratch for the PIO (parallel I/O) microcontroller on the IOC board. It's a 8041A (ROM masked version) and it's labelled A72 on the schematics. By looking at the picture you took of an IOC board it's clearly a masked ROM (no UV window). Because of this I think it would be very hard to find the ROM image. AFAIK dumping it would require a microphotograph of the die and a lot of patience to recover the ROM bits.... Anyway, for the MESS emulator having a functional PIO is important because it controls (among other things) the line printer output (J6). This is the functionality I'm going to address. All the other parallel I/Os (paper puch/read and PROM programmer) are going to be "plugged" in the firmware (i.e. made to appear disconnected). Bye, -- F.Ulivi