Mapar007 wrote:
Check instruction syntaxes? (SUB and ADD are "strange" sometimes)
This may seem ridiculous, but maybe you should try putting a space between the comma and the number?
This could be it. Usually "sub" doesn't take A as an argument, since it's understood (there is no sub command for HL)
wow I feel really stupid lol, I didn't realize you couldn't load a 16-bit register to another one or that sub wouldn't take a...
Thanks for the help people, I can finish debugging now.
lindenk wrote:
[...]I didn't realize you couldn't load a 16-bit register to another one or that sub wouldn't take a...[...]
Well, not directly, anyway. You can use the stack, such as push hl \ pop de, or you can do it in two eight-bit register steps, such as ld d,h \ ld e,l. Of course, doing things with sp is more complex, but that's a discussion for another time, since I doubt you're attempting that.
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