I now have a functional assembler for writing T-1 code (in order to generate wiring patterns It supports macros, which will help a lot, given my restricted instruction set. It is based on the AS macroassembler by Alfred Arnold. It is a crossassembler that supports many processor families. Arnold includes straightforward instructions in the manual for adding new processors, which I have followed to add T-1 support. Here's an extract of the list output for some simple looping code:
1/ 0 : cpu t1 2/ 0 : 3/ 0 : =0xA counter equ 10 4/ 0 : 5/ 0 : 000A push counter 6/ 1 : 0304 loop1: dec 7/ 2 : 0309 skz 8/ 3 : 0101 jump loop1 9/ 4 : loop2: 10/ 4 : 0104 jump loop2 11/ 5 :
I am currently working on an instruction set simulator, which will run an on arduino mega 2650 board (the same board I use to test logic modules after I make them). The arduino will take the assembler output and simulate execution, allowing me to test the program functionality, inspect stack and memory contents etc - before I commit to handwiring a ROM board!