Files
open-roms/c64/basic/cmd_sys.s
T

32 lines
431 B
ArmAsm

cmd_sys:
jsr basic_end_of_statement_check
bcc +
;; SYS requires an argument
jmp do_SYNTAX_ERROR
*
jsr basic_parse_line_number
;; setup call
lda #$4c ;JMP
sta sys_jmp
lda basic_line_number+0
sta sys_jmp+1
lda basic_line_number+1
sta sys_jmp+2
;; Setup the register values
lda sys_reg_p
pha
lda sys_reg_a
ldx sys_reg_x
ldy sys_reg_y
plp
;; Call the routine.
jsr sys_jmp
jmp basic_execute_statement