.byte 8 ; System font X size
.byte 8 ; System font Y size
.word $0198 ; Aspect ratio (based on 4/3 display)
+ .byte 0 ; TGI driver flags
; Next comes the jump table. With the exception of IRQ, all entries must be
; valid and may point to an RTS for test versions (function not implemented).
; Done, reset the error code
lda #TGI_ERR_OK
beq :+ ; Branch always
-
+
; Done, set the error code
err: lda #TGI_ERR_INV_ARG
: sta ERROR