From 9bb4d204c2d702f82bbd7ebe5ab93983499a6c52 Mon Sep 17 00:00:00 2001 From: Michaelangel007 Date: Tue, 12 Jan 2016 06:32:58 -0800 Subject: [PATCH] Added link to PC BIOS Character set --- README.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 669b096..70f13e3 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,6 @@ #Apple ]\[ HGR Font Tutorial -Revision: 25, Jan 11, 2016. +Revision: 26, Jan 11, 2016. # Table of Contents @@ -253,7 +253,7 @@ The `TEXT` screen is 40x24 characters. The high resolution graphics `HGR` screen Char Height (px/character) = Screen Height (px) / Rows (characters) = 192/24 = 8 -Unfortunately, the data for the TEXT ROM 25123 hardware chip is **not** accessible from the 6502. :-/ This means you will need to manually enter in the 8 bytes/character. :-( The good news is that I've already done this so you can copy / paste. :-) +Unfortunately, the data for the TEXT ROM 25123 hardware chip is **not** accessible from the 6502 unlike say the [IBM PC BIOS Character Sets](http://nerdlypleasures.blogspot.com/2015/04/ibm-character-fonts.html).:-/ T his means you will need to manually enter in the 8 bytes/character. :-( The good news is that I've already done this so you can copy / paste. :-) You can find a picture of the Apple ][ ROM text font on Page 8-9, diagram 8.4 of "Understanding the Apple ]\[" https://archive.org/stream/understanding_the_apple_ii#page/n203/mode/2up