lilprof78 ROM looks good, and the instructions PLA looks the same as Wiz-A-Tron (ignoring what's under the smudge). I see no indication on extra opcodes such as an Power-OFF opcode.

I'll add it to MESS now and post an update soon.

*edit* hmm I'm going to cleanup the driver a bit 1st. Also:

6 row 1
7 N/C
8 col 1
9 row 2
10 col 2
11 row 3
12 col 3
13 row 4
14 col 4
15 row 5

rows are write-R pins, cols are read-K pins?

Last edited by hap; 03/14/15 11:02 PM.