From 4f94adec368eaa3f7a02438941a4272a025ef376 Mon Sep 17 00:00:00 2001 From: Michaelangel007 Date: Tue, 18 Jul 2017 19:00:57 -0700 Subject: [PATCH] Add Text Screen holes --- README.md | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/README.md b/README.md index 381c243..e9e56ec 100644 --- a/README.md +++ b/README.md @@ -2062,6 +2062,37 @@ For our final trick we are going to copy the characters off the text screen onto The text screen, like the HGR screen, is also non-linear, and also broken up into a triad: +|Row| Text Address | Screen Hole | +|--:|:------------:|:------------:| +| 0 | $400 .. $427 | n/a | +| 1 | $480 .. $4A7 | n/a | +| 2 | $500 .. $527 | n/a | +| 3 | $580 .. $5A7 | n/a | +| 4 | $600 .. $627 | n/a | +| 5 | $600 .. $6A7 | n/a | +| 6 | $700 .. $727 | n/a | +| 7 | $780 .. $7A7 | n/a | +| - | -- | -- | +| 8 | $428 .. $44F | n/a | +| 9 | $4A8 .. $4CF | n/a | +|10 | $528 .. $54F | n/a | +|11 | $5A8 .. $5CF | n/a | +|12 | $628 .. $64F | n/a | +|13 | $6A8 .. $6CF | n/a | +|14 | $728 .. $74F | n/a | +|15 | $7A8 .. $7CF | n/a | +| - | -- | -- | +|16 | $450 .. $477 | $478 .. $47F | +|17 | $4D0 .. $4F7 | $4F8 .. $4FF | +|18 | $550 .. $577 | $578 .. $57F | +|19 | $5D0 .. $5F7 | $5F8 .. $5FF | +|20 | $650 .. $677 | $678 .. $67F | +|21 | $6D0 .. $6F7 | $6F8 .. $6FF | +|22 | $750 .. $777 | $778 .. $77F | +|23 | $7D0 .. $7F7 | $7F8 .. $7FF | + +Analzying both the Text and HGR addresses: + |Row|Text Address|HGR Address|HGR Scanline| |--:|:----:|:-----:|---:| | 0 | $400 | $2000 | 0|