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update info on roms

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Zellyn Hunter 2014-06-05 08:08:38 -07:00
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* Memory map of the Apple II ROMs
http://www.easy68k.com/paulrsm/6502/MEMMAP.HTM
| $F800-$FFFF | Monitor. Handles screen I/O and keyboard input. Also has a |
| monitor.asm | disassembler, memory dump, memory move, memory compare, step and trace |
| | functions, lo-res graphics routines, multiply and divide routines, and |
| | more. This monitor has the cleanest code of all the Apple II |
| | monitors. Every one after this had to patch the monitor to add |
| | functions while still remaining (mostly) compatible. Complete source |
| | code is in the manual. |
| | |
| $F689-F7FC | Sweet-16 interpreter. Sweet-16 code has been benchmarked to be about |
| sweet16.asm | half the size of pure 6502 code but 5-8 times slower. The renumber |
| | routine in the Programmer's Aid #1 is written in Sweet-16, where small |
| | size was much more important than speed. Complete source code is in |
| | the manual. |
| | |
| $F500-F63C | Mini-assembler. This lets you type in assembly code, one line at a |
| $F666-F668 | time, and it will assemble the proper bytes. No labels or equates are |
| miniasm.asm | supported--it is a MINI assembler. Complete source code is in the |
| | manual. |
| | |
| $F425-F4FB | Floating point routines. Woz's first plans for his 6502 BASIC included |
| $F63D-F65D | floating point, but he abandoned them when he realized he could finish |
| fp.asm | faster by going integer only. He put these routines in the ROMs but |
| | they are not called from anywhere. Complete source code is in the |
| | manual. |
| | |
| $E000-F424 | Integer BASIC by Woz (Steve Wozniak, creator of the Apple II). "That |
| intbasic.asm | BASIC, which we shipped with the first Apple II's, was never |
| | assembled--ever. There was one handwritten copy, all handwritten, all |
| | hand assembled." Woz, October 1984. |
| | |
| $D800-DFFF | Empty ROM socket. There was at least one third party ROM add-on. |
| | |
| $D000-D7FF | Programmer's Aid #1--missing from the original Apple II, this is a ROM |
| | add-on Apple sold that contains Integer BASIC utilities such as |
| | high-resolution graphics support, renumber, append, tape verify, |
| | music, and a RAM test. Complete source code is in the manual. |
| + | $F800-$FFFF | Monitor. Handles screen I/O and keyboard input. Also has a |
| | monitor.asm | disassembler, memory dump, memory move, memory compare, step and trace |
| | | functions, lo-res graphics routines, multiply and divide routines, and |
| | | more. This monitor has the cleanest code of all the Apple II |
| | | monitors. Every one after this had to patch the monitor to add |
| | | functions while still remaining (mostly) compatible. Complete source |
| | | code is in the manual. |
| | | |
| + | $F689-F7FC | Sweet-16 interpreter. Sweet-16 code has been benchmarked to be about |
| | sweet16.asm | half the size of pure 6502 code but 5-8 times slower. The renumber |
| | | routine in the Programmer's Aid #1 is written in Sweet-16, where small |
| | | size was much more important than speed. Complete source code is in |
| | | the manual. |
| | | |
| + | $F500-F63C | Mini-assembler. This lets you type in assembly code, one line at a |
| | $F666-F668 | time, and it will assemble the proper bytes. No labels or equates are |
| | miniasm.asm | supported--it is a MINI assembler. Complete source code is in the |
| | | manual. |
| | | |
| + | $F425-F4FB | Floating point routines. Woz's first plans for his 6502 BASIC included |
| | $F63D-F65D | floating point, but he abandoned them when he realized he could finish |
| | fp.asm | faster by going integer only. He put these routines in the ROMs but |
| | | they are not called from anywhere. Complete source code is in the |
| | | manual. |
| | | |
| | $E000-F424 | Integer BASIC by Woz (Steve Wozniak, creator of the Apple II). "That |
| | intbasic.asm | BASIC, which we shipped with the first Apple II's, was never |
| | | assembled--ever. There was one handwritten copy, all handwritten, all |
| | | hand assembled." Woz, October 1984. |
| | | |
| | $D800-DFFF | Empty ROM socket. There was at least one third party ROM add-on. |
| | | |
| | $D000-D7FF | Programmer's Aid #1--missing from the original Apple II, this is a ROM |
| | | add-on Apple sold that contains Integer BASIC utilities such as |
| | | high-resolution graphics support, renumber, append, tape verify, |
| | | music, and a RAM test. Complete source code is in the manual. |
* Misc