; http://www.roesler-ac.de/wolfram/hello.htm#Assembler-ZX81 ; ; Hello World in Assembler for the ZX81 (Zilog Z80) CALL SPRINT DEFM HELLO WORLD. DEFB FF RET SPRINT POP HL LD A,(HL) INC HL PUSH HL CP FF RET Z CALL PRINT JR SPRINTk