Changes

* <code>|Bank, n </code> - Map a 16K bank directly into memory space (where n is the bank No.)* <code>|Swap </code> - Alternate between high and low screens* <code>|Low </code> - Change to the low screen* <code>|High </code> - Change to the high (default) screen* <code>|Saves, n </code> - Store a screen to a 16K bank (where n is the bank No.)* <code>|Loads, n </code> - Retrieve a screen from a 16K bank (where n is the bank No.)* <code>|Savew, w, n </code> - Stores a windows contents into a 16K bank (where n is the bank No.)* <code>|Loadw, w, n </code> - Load a window with the data from a 16K bank (where n is the bank No.)* <code>|Saved, n, s, l </code> - Transfer original RAM to expansion RAM* <code>|Loadd, n, s, l </code> - Load original RAM from expansion RAM* <code>|Peek, n, s, v </code> - Read the value of a byte in the expansion RAM* <code>|Poke, n, s, v </code> - Write to a byte in the expansion RAM

* <code>|Askram, E, V </code> (E=enquiry No. V=variable) could be used to request information from the expansion card, including the amount of RAM available (where E=1), return the number of banks available (where E=2) or (E=3) returned a 0 or 1 to indicate whether the expansion card 'had a problem'.