32K RAM
| The COMX 32K RAM card places additional RAM from address @C000 to @DFFF, i.e. only one 8KB bank of the available 32K at a time. To switch to a different 8K bank the OUT 1 instruction should be used. Bit 5 and 6 were used for the RAM bank selection (bit 1 to 4 were used for the expansion box slot selection, see also I/O Map). |