From de8c8686dba6a3764e5c571795065b41f7001fac Mon Sep 17 00:00:00 2001 From: Michaelangel007 Date: Wed, 27 Jan 2016 21:18:28 -0800 Subject: [PATCH] Add note about Ctrl-H Ctrl-U --- README.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 2cae0cb..044fc61 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,6 @@ #Apple ]\[ //e HGR Font 6502 Assembly Language Tutorial -Revision: 60, Jan 27, 2016. +Revision: 61, Jan 27, 2016. # Table of Contents @@ -1540,14 +1540,14 @@ Listing Demo 3a: 1013:AD 00 C0 .2 LDA KEYBOARD ; read A=key 1016:10 FB BPL .2 ; no key? 1018:8D 10 C0 STA KEYSTROBE ; debounce key - 101B:C9 88 CMP #$88 ; key == <-- ? + 101B:C9 88 CMP #$88 ; key == <-- ? CTRL-H 101D:D0 0A BNE .4 ; 101F:C6 FE DEC glyph ; yes, --glyph 1021:A5 FE .3 LDA glyph ; glyph &= 0x7F 1023:29 7F AND #$7F ; 1025:85 FE STA glyph ; 1027:10 DB BPL .1 ; always branch, draw prev char - 1029:C9 95 .4 CMP #$95 ; key == --> ? + 1029:C9 95 .4 CMP #$95 ; key == --> ? CTRL-U 102B:D0 05 BNE .5 ; 102D:E6 FE INC glyph ; yes, ++glyph 102F:18 CLC ; always branch