Spectrum Basic Memory Map
Spectrum Basic Memory Map
The following table shows the memory map of the Spectrum as seen by BASIC.
| Address | 48K | 128K | ||||||
|---|---|---|---|---|---|---|---|---|
| 4000 | Display File | |||||||
| 5800 | Display Attributes | |||||||
| 5B00 | Printer Buffer | |||||||
| 5C00 | System variables | |||||||
| 5CB6 CHANS |
Channel Information | |||||||
| PROG | 0x80h | |||||||
| Basic Program | ||||||||
| VARS | Variables | |||||||
| 0x80h | ||||||||
| Command or program line being edited | ||||||||
| NL | ||||||||
| 0x80h | ||||||||
| WORKSP | INPUT data | |||||||
| NL | ||||||||
| Temporary workspace | ||||||||
| STKBOT | Calculator stack | |||||||
| STKEND | ||||||||
| Spare | ||||||||
| SP | Machine stack | |||||||
| Gosub stack | ||||||||
| RAMTOP | ||||||||
| 0x3E | ||||||||
| UDG | User defined graphics | |||||||
| PRAMT | ||||||||
Last modified November 2, 2021: Add basic memory map (4b394fe)