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Memory Map
System variables
Display Format
Character Sets
Monitor Subroutines
Monitor Commands
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The display is made up of 16 rows of 32 characters, in a
contiguous block starting at address 0200. Characters are sequential, the
first line beginning at address 0200, the next at 0220, and so on:
| 0200 |
0201 |
... |
021E |
021F |
| 0220 |
0221 |
... |
023E |
023F |
|
|
... |
|
|
| 03C0 |
03C1 |
... |
03DE |
03DF |
| 03E0 |
03E1 |
... |
03FE |
03FF |
A single character cell may be either an ASCII character or a
"chunky graphic" character. Reading from address BFF0 causes
subsequent writes to the display to appear as chunky graphics. Writing to
BFF3 causes subsequent characters to appear as ASCII characters. It is not
possible to determine whether a particular character is being displayed as an
ASCII character or a chunky character.
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