6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2025-01-02 08:34:14 +00:00
Code Issues Projects Releases Wiki Activity

Corrects graphics video range.

Thomas Harte 2018-07-30 23:17:18 -04:00
parent 7085db5c4a
commit 5ede4bb286
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Apple-IIe-Memory-Paging.md

@ -4,7 +4,7 @@ Apple provides multiple overlapping paging mechanisms which in total divide an A
## [0000, 0200)
Reading and writing: contains auxiliary RAM if `ALTZP` is set. Contains base RAM otherwise.
## [0300, 0400); [0800, 1000); [2000, C000)
## [0300, 0400); [0800, 2000); [4000, C000)
Reading: contains base RAM if `RAMRD` is reset; contains auxiliary RAM otherwise.
Writing: as per reading, but regarding `RAMWRT` rather than `RAMRD`.
@ -13,7 +13,7 @@ Reading: contains auxiliary RAM if either (i) both `80STORE` and `PAGE2` are set
Writing: as per reading, but regarding `RAMWRT` rather than `RAMRD`.
## [1000, 2000)
## [2000, 4000)
Reading: contains auxiliary RAM if either (i) `80STORE` and `PAGE2` are set, and `TEXT` is reset; or (ii) `80STORE` is reset and `RAMRD` is set. Contains base RAM otherwise.
Writing: as per reading, but regarding `RAMWRT` rather than `RAMRD`.