BASIC ROM Routines
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BASIC ROM Routines
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BASIC ROM Routines
by Christopher Dewhurst
BASIC IV ROM Routines
By Steve Fewell
I decided to begin something I've been wanting to do for a long time, that is
to produce listings of BASIC 4 ROM's routines, together with detailed descriptions
of how they work.
Please let me know what you think, and whether you'd like to see more like it. If anyone else wants to have a go at writing up with me then please feel free to post (added CJR: send them to 8BS) your own descriptions of routines from BASIC 4 (or another version of BASIC).
If I've made a mistake, and someone wants to correct/expand on something, then please do so.
BASIC IV Routines
|
Routine Name |
Start Address |
Comments |
|
80F9 |
||
|
8185 |
||
|
81E2 |
||
|
81F7 |
||
|
8242 |
||
|
82C4 |
||
|
8349 |
||
|
8ED5 |
||
|
96BE |
||
|
9E65 |
||
|
9ECA |
||
|
9F64 |
||
|
9FF5 |
||
|
9FFD |
||
|
A3F2 |
||
|
A40B |
||
|
A436 |
||
|
A478 |
||
|
A570 |
||
|
A6B4 |
||
|
AA80 |
||
|
ABDB |
||
|
ABE8 |
||
|
ACBE |
||
|
ACCA |
||
|
ACDE |
||
|
AD19 |
||
|
ADB7 |
||
|
AE1A |
||
| Load Integer from Address | B1AA | |
| Reset ON ERROR code pointer | B2A6 | |
| Save Integer to Address | B347 | |
| Push Integer to BASIC Stack | BC26 | |
| Pop Integer from BASIC Stack | BCE6 | |
| Pop Integer from BASIC Stack (Zp) | BD08 | |
| Check for Stack clash with Heap | BD1E | |
| Save Integer to Zero Page Address | BDC6 |
Disassembly
8000 to 9000 HTML TEXT CSV
9000 to A000 HTML TEXT CSV
A000 to B000 HTML TEXT CSV
B000 to C000 HTML TEXT CSV
