Implement debug messages #35
Description
GBG knows two kinds of debug messages that can be used to trace what the program is doing. They're described in the manual.
In the first kind, the message is embedded in the instructions
ld d, d ; signals a debug message
jr .enddebugmsg
; the next 4 instructions specify the kind of mesage
ld h, h
ld h, h
dw $0000
db "my message"
.enddebugmsg
The second kind loads a zero-terminated string from an address, which can be useful for dynamic messages that include runtime values.
ld d, d
jr .enddebugmsg
; the next 4 instructions specify the kind of mesage
ld h, h
ld h, h
dw $0001
dw address
dw bank
.enddebugmsg
In BGB, these messages are displayed in a separate window.
This would be a nice feature, I think.