Single-board 6809, Z80, 6502, etc
# This is a comment line in case you ever need comments
> INFO
6809B SBC ver 1.21.2
> HELP # Help is little more than example commands (like below)
(lots of spew here)
> PEEK 1024 # Read a single byte from memory
5F
> PEEK 0x400 4 # Read 4 bytes of memory starting at 0x400
5F 60 7B 11
> DUMP 0x40D 5 # Memory dump format 5 bytes of memory starting at 40D
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F | ASCII
0400: -- -- -- -- -- -- -- -- -- -- -- -- -- 12 30 00 | ...
0410: 38 5B -- -- -- -- -- -- -- -- -- -- -- -- -- -- | 8[
> POKE 0x400 0b11_00_11_00 # Poke a single value to 0x400
OK
> POKE 0x400 10 20 55 60 88 # Poke 5 values into memory starting at 0x400
OK
> LOAD 0x400 255 # Read 255 bytes of data from the stream and store in memory (intended for an external program to load code)
(...255 bytes read from stream..)
CHK 17D
> EXEC 49152 # Execute the code at 49152
BYE
> IN 20 # I/O "in" operation (for processors that support it)
88
> OUT 20 FF # I/O "out" operation (for processors that support it)
OK
Case is ignored. Commas are converted to spaces (allows for things like POKE 10 1,2,3,4). Underscores "_" in constants are ignored.
Value bases:
1234decimal0xBEEFhex0b11001111binary
Error message examples:
- UNKNOWN COMMAND
- INVALID BYTE: 1B77
- INVALID WORD: hello
- TOO MANY VALUES GIVEN
- NOT ENOUGH VALUES GIVEN