* Common bytes in FP and INT D0 ROMS
D17B 53
D1B3 54
D267 54
D273 54
D307 20
D32A 20
D337 20
D347 20
D51C 00
D57C F0
D665 20
D667 D6
D694 85
D69B FF
D6DC B1
D6F7 84
D729 4C
D72B D7
D747 F0
D74B D7
D768 85
D76E 65
* Links to things to test
** TODO [[https://groups.google.com/d/msg/comp.sys.apple2/RMnus8p6xp8/TDfD2HVtDwAJ][csa2: question on HGR behavior with enhanced 128K Apple //e]]
* Language card operation


| Bank 2 | Bank 1 |     | Action     | RAM          | Alt Bank 2 | Alt Bank 1 |
|--------+--------+-----+------------+--------------+------------+------------|
| C080   | C088   | R/W | WRTCOUNT=0 | READ ENABLE  | C084       | C08C       |
| C081   | C089   | R   | WRTCOUNT++ | READ DISABLE | C085       | C08D       |
|        |        | W   | WRTCOUNT=0 | READ DISABLE |            |            |
| C082   | C08A   | R/W | WRTCOUNT=0 | READ DISABLE | C086       | C08E       |
| C083   | C08B   | R   | WRTCOUNT++ | READ ENABLE  | C087       | C08F       |
|        |        | W   | WRTCOUNT=0 | READ ENABLE  |            |            |
Writing to high RAM is enabled when WRTCOUNT >= 2
Source: UtA2e, pg 5-24.