| Notes | Address | Name | Contents | |
|---|---|---|---|---|
| N30 | 23698 | MEMBOT | Calculator's memory area; used to store numbers that cannot conveniently be put on the calculator stack. | |
| 23698 | 5C92 | (IY+$58) | MEM-0 1st |
| 23699 | 5C93 | (IY+$59) | MEM-0 2nd |
| 23700 | 5C94 | (IY+$5A) | MEM-0 3rd |
| 23701 | 5C95 | (IY+$5B) | MEM-0 4th |
| 23702 | 5C96 | (IY+$5C) | MEM-0 5th |
| 23703 | 5C97 | (IY+$5D) | MEM-1 1st |
| 23704 | 5C98 | (IY+$5E) | MEM-1 2nd |
| 23705 | 5C99 | (IY+$5F) | MEM-1 3rd |
| 23706 | 5C9A | (IY+$60) | MEM-1 4th |
| 23707 | 5C9B | (IY+$61) | MEM-1 5th |
| 23708 | 5C9C | (IY+$62) | MEM-2 1st |
| 23709 | 5C9D | (IY+$63) | MEM-2 2nd |
| 23710 | 5C9E | (IY+$64) | MEM-2 3rd |
| 23711 | 5C9F | (IY+$65) | MEM-2 4th |
| 23712 | 5CA0 | (IY+$66) | MEM-2 5th |
| 23713 | 5CA1 | (IY+$67) | MEM-3 1st |
| 23714 | 5CA2 | (IY+$68) | MEM-3 2nd |
| 23715 | 5CA3 | (IY+$69) | MEM-3 3rd |
| 23716 | 5CA4 | (IY+$6A) | MEM-3 4th |
| 23717 | 5CA5 | (IY+$6B) | MEM-3 5th |
| 23718 | 5CA6 | (IY+$6C) | MEM-4 1st |
| 23719 | 5CA7 | (IY+$6D) | MEM-4 2nd |
| 23720 | 5CA8 | (IY+$6E) | MEM-4 3rd |
| 23721 | 5CA9 | (IY+$6F) | MEM-4 4th |
| 23722 | 5CAA | (IY+$70) | MEM-4 5th |
| 23723 | 5CAB | (IY+$71) | MEM-5 1st |
| 23724 | 5CAC | (IY+$72) | MEM-5 2nd |
| 23725 | 5CAD | (IY+$73) | MEM-5 3rd |
| 23726 | 5CAE | (IY+$74) | MEM-5 4th |
| 23727 | 5CAF | (IY+$75) | MEM-5 5th |
Notes: This is the calulator's memory area - where temporary values, numbers and string parameters, are stored during calculations. The full range 0-5 are used while printing floating point numbers and circle drawing.
If you want to make use of the calculator then you can access 32 memory locations by moving this area above RAMTOP. The start of this area is determined by the system variable MEM.
The ROM itself moves this location to the variables area when evaluating a FOR-NEXT LOOP so that the three numeric arguments, initial value, last value and step can be easily accessed in mem-0 to mem-2.
The ROM also uses the first eight locations of this area to construct the bit-patterns for the 4-tiled mosaic characters 128-143.