Mapping the Commodore 64
Mapping the Commodore 64 is a 1984 book by Sheldon Leemon, published by COMPUTE! Publications of Greensboro, North Carolina. ISBN 0-942386-23-X.[1] The Library of Congress record gives the extent as xii, 268 pages (call number QA76.8.C64 L45 1984).[2]
It is a memory map of the Commodore 64 that goes through the address space location by location, from page zero to the Kernal ROM, explaining what each location does and how to use it from BASIC or machine language. Chapter 6 covers the registers of the VIC-II, the SID, the two 6526 CIAs, colour RAM and the character ROM.[3][4] Leemon credits Russ Davies, author of Mapping the VIC, and Dan Heeb for their research, and names Commodore's Commodore 64 Programmer's Reference Guide as his most valuable technical source.[5]
Contents
[edit | edit source]Page numbers are from the book's contents list.[4]
- Foreword, p. v
- Acknowledgments, p. v
- Introduction, p. vii
- Chapter 1: Page 0, p. 1
- Chapter 2: Page 1, p. 45
- Chapter 3: Pages 2 and 3, BASIC and Kernal Working Storage, p. 49
- Chapter 4: 1K to 40K, Screen Memory, Sprite Pointers, and BASIC Program Text, p. 79
- Chapter 5: 8K BASIC ROM and 4K Free RAM, p. 85
- Chapter 6: VIC-II, SID, I/O Devices, Color RAM, and Character ROM, p. 119
- Chapter 7: 8K Operating System Kernal ROM, p. 203
- Appendices A-H, pp. 249-263 (typing in programs, screen location and colour memory tables, colour codes, ASCII codes, screen codes, keycodes)
- Index (by memory location), p. 265
What this book does not contain
[edit | edit source]It describes the chips by their registers. The one hardware table is in the CIA section: the user port pins, with the RS-232 signals and their DB-25 equivalents.[6] It has no schematics, parts lists or component values; for those use the Commodore 64 / 64C Service Manual.
Download: Computes Mapping the Commodore 64.pdf
References
[edit | edit source]- ↑ Sheldon Leemon, Mapping the Commodore 64 (COMPUTE! Publications, 1984), title page and copyright page (PDF pp. 3-4).
- ↑ Open Library, Mapping the Commodore 64, record OL2933682M, from Library of Congress catalogue data (LCCN 84-170268). Retrieved 2026-10-01.
- ↑ Leemon, Mapping the Commodore 64, Foreword, p. v (PDF p. 7).
- ↑ 4.0 4.1 Leemon, Mapping the Commodore 64, Contents, p. iii (PDF p. 5).
- ↑ Leemon, Mapping the Commodore 64, Acknowledgments, pp. v-vi (PDF pp. 7-8).
- ↑ Leemon, Mapping the Commodore 64, locations 56576-56577, user port table, p. 188 (PDF p. 202).