Z80 Chip doesn't handle LD A,(IX+n) correctly

[OfficialPixelBrush]

Z80 Chip doesn't handle LD A,(IX+n) correctly

[floooh]

As far as I can see, none of the instructions in this program set any flags, so the JP NZ would either never or always loop, depending on the intial state of the Z flag before the program was started.

(most notably: unlike the 6502, the Z80 doesn't set any flags in load instructions).

[floooh]

PS: this modified program should work as expected (compare A against 0 before the JP NZ, and the writeHelloWorld had to be moved after the LD IX,0, otherwise it would undo the INC IX. Also it's important that the entire program including the string lives below address 128.

	; IX used as pointer
	LD IX,0
writeHelloWorld:
	; hello offset + pointer
	LD A,(IX+hello)
	; output on data bus to LCD
	OUT (1),A
	; increment IX
	INC IX
	CP 0
	JP NZ,writeHelloWorld 
	HALT
hello:
    	DEFB "Hello, world!",0

[OfficialPixelBrush]

Now I do feel quite silly. Apologies for that.
Thanks for the help though!

[floooh]

No problem :)