On 8/16/16 6:59 PM, Brad H wrote: > > > Neat. Any thoughts as to model year? Are these ASCII? >
Date code range I see on the chips is 1977-79. I dumped and decoded the font rom. The code is similar but not quite ASCII. Alphanumerics seem to be in the right place. I'll try powering it up once I get a bit more of it traced out. There is a 256x8 prom right by the keyboard socket, so I'm guessing there is some code conversion going on with the keyboard. Getting it to talk to something would require tracing the modem card input back to the 8251 uart. There is a 'print' option on they keyboard above the 'P' so the 25 pin connector is probably for a printer. They appear to have FIFOs on the COM2017 UART.
