Atari 400 - Page 306

304 User's Handbook to the Atari 400/ 800 Compute rs
Table D-3. Operating System RAM Memory Addresses
Memory Address
Reference
1152-1791
User RAM
512-1151
Operating System RAM (detailed below)
1021-1151
Cassette Buffer
1000-1020
Spare
960-999
Printer
Buffer
944-959
I/ O Channel 7
928-943
I/ O Channel 6
912-927
I/ O Channel 5
896-911
I/ O Channel 4
880-895 I/ O Channe l 3
864-879
I/ O Channel 2
848-863
I/ O Channell
832-847
I/ O Channel 0
794-831 Handler Address Tables
780-793
Miscellaneous
768-779 DCB
736 - 767 Miscellaneous
712-735
Spare
704-711 Co lors
656-703
Screen RAM
648-655 Miscellaneous
624-647 Game
Controllers
554-623 Miscellaneous
512-553
Int errupt Vectors
256-511
Stack
128-255
User
Page 0 RAM
0-127
Operating System Page 0 RAM