adapted to Kick Assembler, some documentation update

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FeralChild64 committed 2019-09-07 12:35:21 +02:00
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;;
;; Official Kernal routine, described in:
;;
;; - [RG64] C64 Programmer's Reference Guide - page 290
;; - [CM64] Compute's Mapping the Commodore 64 - page 215
;;
;; CPU registers that has to be preserved (see [RG64]): none
;;
//
// Official Kernal routine, described in:
//
// - [RG64] C64 Programmer's Reference Guide - page 290
// - [CM64] Compute's Mapping the Commodore 64 - page 215
//
// CPU registers that has to be preserved (see [RG64]): none
//
plot:
PLOT:
bcs plot_get
plot_set:
sty current_screen_y
stx current_screen_x
;; Our implementation has different screen editor, updating any
;; other variables (see [CM64]) seems to be unnecessary
// XXX handle cursor blink
;; FALLTROUGH to save one byte on RTS
// FALLTROUGH to save one byte on RTS
plot_get:
ldy current_screen_y