| $00-$FF | Program work space for frequently accessed parameters |
| $100-$1FF | System stack |
| $200-$2FF | Keyboard and general purpose buffer |
| $300-$3FF | Machine Language routine/Linkage Vector Page |
| $400-$7FF | Text and Lo-Res Graphics Display Buffer |
| $800-$1FFF | User Program Memory |
| $2000-$3FFF | Hi-Res Graphics Page 1 |
| $4000-$5FFF | Hi-Res Graphics Page 2 |
| $6000-$95FF | RAM for user programs |
| $9600-$9CFF | DOS Files Buffers |
| $9D00-$AAFC | Main DOS Routines |
| $AAFD-$B7B4 | File Manager |
| $B7B5-$BFFF | DOS RWTS |
| $C000-$C07F | Built-in I/O Locations |
| $C080-$C0FF | Peripheral Card I/O Space |
| $C100-$C7FF | Peripheral Card ROM Space |
| $C800-$CFFF | Expansion ROM Space |
| $D000-$FFFF | Monitor and Interpreter ROM |