Programming guide: Difference between revisions

From NESdev Wiki
Jump to navigationJump to search
(→‎Audio: I'm about to drop a new page Audio drivers that I had written for FamiTracker.org's wiki, but because that's delayed)
(Link to the article about CRC32 calculation.)
 
(24 intermediate revisions by 8 users not shown)
Line 3: Line 3:
=== Getting started ===
=== Getting started ===
*[[Before the basics]]
*[[Before the basics]]
*[[Commissioning]] - suggestions for a non-programmer seeking help
*[[Programming Basics]]
*[[Installing CC65]]
*[[Installing CC65]]
*[[Programming Basics]]


=== General reference ===
=== General reference ===
* [[Registers]]
* [[PPU power up state#Best practice|Waiting for the PPU to power on]]
* [[PPU power up state#Best practice|Waiting for the PPU to power on]]
* [[CHR-ROM vs CHR-RAM]] and how to switch an NROM project from the former to the latter
* [[CHR-ROM vs CHR-RAM]] and how to switch an NROM project from the former to the latter
* [[Emulation Libraries]]
* [[Emulation Libraries]]
* [[Catch-up]] technique used by emulators
* [[Catch-up]] technique used by emulators
* [[PowerPak]] / [[Everdrive N8]]
* [[:Category:Flash Cartridge|Flash Cartridges]] ([[PowerPak]] / [[Everdrive N8]] / [[Everdrive N8 Pro]] / [[KrzysioCart]])
* [[Music]]: [[:Category:Expansion audio|Expansion audio]]
* [[Music]]: [[:Category:Expansion audio|Expansion audio]]
* [[Tools]] — includes assemblers, disassemblers, graphics, music/audio, and emulator-related utilities
* [[Tools]] — includes assemblers, disassemblers, graphics, music/audio, and emulator-related utilities
Line 26: Line 28:
* Programming Techniques
* Programming Techniques
** [[6502 assembly optimisations]]
** [[6502 assembly optimisations]]
** [[Cycle counting]]
** [[RTS Trick]]
** [[RTS Trick]]
** [[Jump Table]]
** [[Jump Table]]
Line 33: Line 36:
** [[Programming with unofficial opcodes]]
** [[Programming with unofficial opcodes]]
** [[Pointer table]]s
** [[Pointer table]]s
** [[Divide by 3]]
** [[Multibyte constant]]
** [[Multibyte constant]]
* [[Limitations]]
* [[Limitations]]
Line 49: Line 51:
* [[Nerdy Nights sound]]
* [[Nerdy Nights sound]]
* [[Palette change mid frame]]
* [[Palette change mid frame]]
* [[Don't hardcode OAM addresses]]
* [[Interrupt forwarding]]
* [[Sprite cel streaming]]
* [[Drawing terrain]]
* [[Releasing on modern platforms]]


=== Libraries and samples ===
=== Libraries and samples ===
Line 54: Line 61:
==== System ====
==== System ====
* [[Init code]]
* [[Init code]]
* [[Registers]]


==== Input ====
==== Input ====
* [[Controller Reading]]
* [[Controller reading]]
* [[Controller reading code]]


==== Graphics ====
==== Graphics ====
Line 66: Line 73:
==== Math ====
==== Math ====
* [[Multiplication by a constant integer]]
* [[Multiplication by a constant integer]]
* [[Fast signed multiply]] - Fast table driven multiplication
* [[8-bit Multiply]] - Multiplies two 8-bit integers to a 16-bit result
* [[8-bit Divide]] - Divide two 8-bit integers to a 16-bit result
* [[Division by a constant integer]]
* [[Division by a constant integer]]
* [[16-bit BCD|An efficient 16-bit binary to decimal converter]]
* [[Divide by 3]]
* [[8-bit Multiply|Multiplies two 8-bit integers to a 16-bit result]]
* [[16-bit BCD]] - An efficient 16-bit binary to decimal converter
* [[8-bit Divide|Divide two 8-bit integers to a 16-bit result]]
* [[Base 100]] - An alternate method of storing numbers, to simplify BCD conversion
* [[Fast signed multiply|Fast table driven multiplication]]
* [[Random number generator]]
* [[Random number generator]]


Line 80: Line 89:
==== Misc ====
==== Misc ====
* [//forums.nesdev.org/viewtopic.php?p=194826#p194826 Skipping the FDS license screen]
* [//forums.nesdev.org/viewtopic.php?p=194826#p194826 Skipping the FDS license screen]
* [[Calculate CRC32|CRC32 checksum calculation]]


==== Examples ====
==== Examples ====
* [[Projects]] - includes many useful open-source examples.
* [[Projects]] - includes many useful open-source examples.
* [http://nintendoage.com/pub/faq/NA/index.html?load=nerdy_nights_out.html Nerdy Nights Out (aka: Learning 6502)] by BunnyBoy
* [https://nerdy-nights.nes.science/ Nerdy Nights Out (aka: Learning 6502)] by BunnyBoy
* [https://shiru.untergrund.net/articles/programming_nes_games_in_c.htm Programming NES Games in C] by Shiru
* [https://shiru.untergrund.net/articles/programming_nes_games_in_c.htm Programming NES Games in C] by Shiru
* [https://nesdoug.com/ How to Program an NES game in C] by dougeff
* [https://nesdoug.com/ How to Program an NES game in C] by dougeff
* [https://nes-starter-kit.nes.science Simple game and editing guide (in C)]
* [https://pineight.com/nes/#template Project template] by tepples
* [https://pineight.com/nes/#template Project template] by tepples
* [//forums.nesdev.org/viewtopic.php?t=11151 Minimal NES example using ca65] by rainwarrior
* [//forums.nesdev.org/viewtopic.php?t=11151 Minimal NES example using ca65] by rainwarrior
Line 99: Line 110:
==== Books ====
==== Books ====
* Cady, Fredrick M. (1997). ''Microcontrollers and Microcomputers: Principles of Software and Hardware Engineering''. New York: Oxford University Press. ISBN 0-19-511008-0.
* Cady, Fredrick M. (1997). ''Microcontrollers and Microcomputers: Principles of Software and Hardware Engineering''. New York: Oxford University Press. ISBN 0-19-511008-0.
* Eyes, David; Lichty, Ron (1986). ''Programming the 65816 including the 6502, 65C02, and 65802''. New York: Brady Books/Prentice Hall Press (Simon & Schuster, Inc). ISBN 0-89303-789-3.
* Eyes, David; Lichty, Ron (1986). ''Programming the 65816 including the 6502, 65C02, and 65802''. New York: Brady Books/Prentice Hall Press (Simon & Schuster, Inc). ISBN 0-89303-789-3. Rights later purchased by Western Design Center.
* Fernandez, Judi N. (1983). ''6502 Assembly Language Programming (Self-teaching Guides)''. John Wiley & Sons Inc. ISBN 978-0471861201.
* Fernandez, Judi N. (1983). ''6502 Assembly Language Programming (Self-teaching Guides)''. John Wiley & Sons Inc. ISBN 978-0471861201.
* Leventhal, Lance A. (1986). ''6502 Assembly Language Programming 2nd Edition''. Osborne/McGraw-Hill. ISBN 0-07-881216-X.
* Leventhal, Lance A. (1986). ''6502 Assembly Language Programming 2nd Edition''. Osborne/McGraw-Hill. ISBN 0-07-881216-X.
Line 107: Line 118:


==== Online ====
==== Online ====
* [http://65xx.com/Products/Programming_and_Hardware-Manuals/ Programming the 65816 (including the 6502, 65C02, and 65802)] by Western Design Center
* [http://wdc65xx.com/Programming-Manual/ Programming the 65816 (including the 6502, 65C02, and 65802)] by Western Design Center
*# [http://www.westerndesigncenter.com/wdc/documentation/Programmingthe65816_ProgManual.pdf Programmingthe65816_ProgManual.pdf] — 54MBytes, created 2015/03/27.
*# [http://www.westerndesigncenter.com/wdc/documentation/Programmingthe65816_ProgManual.pdf Programmingthe65816_ProgManual.pdf] — 54MBytes, created 2015/03/27.
*#* This is a full scan of the original Eyes/Lichty book using full images for each page, with the added bonus of OCR being applied so that text is searchable and copy-paste-able.  Accurate/reliable given the nature of the scan. A backup copy, if the 65xx.com site is down, [http://jdc.koitsu.org/lj/Programmingthe65816_ProgManual.pdf is available] via [[User:Koitsu|Koitsu]].
*#* This is a full scan of the original Eyes/Lichty book using full images for each page, with the added bonus of OCR being applied so that text is searchable and copy-paste-able.  Accurate/reliable given the nature of the scan.
*#**[https://drive.google.com/file/d/1cMzhGjAZPkxlkJxS7c6cRtRO53KC9v1s/view?usp=sharing backup copy] via [[User:Koitsu|Koitsu]] (primary)
*#**[https://jdc.koitsu.org/lj/Programmingthe65816_ProgManual.pdf backup copy] via [[User:Koitsu|Koitsu]] (secondary)
*# [[Media:Programmanual.pdf|Programmanual.pdf]] (a.k.a. WDC65C816_Program_Manual.pdf) — 1.7MBytes, created 2007/04/16.
*# [[Media:Programmanual.pdf|Programmanual.pdf]] (a.k.a. WDC65C816_Program_Manual.pdf) — 1.7MBytes, created 2007/04/16.
*#* This is a "pure text" version of the Eyes/Lichty book, however it is rife with very dangerous typos (wrong opcodes, etc.) in many areas, and contains a large number of formatting/layout mistakes not present in the original book.  Bill Mensch (6502/65C02/65816 architect/designer) [http://forums.nesdev.org/viewtopic.php?p=142722#p142722 confirmed these mistakes], stating WDC is in the process of fixing them.  If at all possible, use the newer PDF mentioned above.
*#* This is a "pure text" version of the Eyes/Lichty book, however it is rife with very dangerous typos (wrong opcodes, etc.) in many areas, and contains a large number of formatting/layout mistakes not present in the original book.  Bill Mensch (6502/65C02/65816 architect/designer) [http://forums.nesdev.org/viewtopic.php?p=142722#p142722 confirmed these mistakes], stating WDC is in the process of fixing them.  If at all possible, use the newer PDF mentioned above.

Latest revision as of 08:21, 23 June 2024

This programming guide is the complement to the NES reference guide. You will find more in-depth documentation about specific topics, tutorials on the most common problems encountered, a list of existing tools that will assist you during you development phase and more. If you're new to NES development, you should give a look to the "getting started" section first.

Getting started

General reference

Tutorials

Libraries and samples

System

Input

Graphics

Math

Audio

Misc

Examples

Reverse engineered techniques

Useful reference materials

Books

  • Cady, Fredrick M. (1997). Microcontrollers and Microcomputers: Principles of Software and Hardware Engineering. New York: Oxford University Press. ISBN 0-19-511008-0.
  • Eyes, David; Lichty, Ron (1986). Programming the 65816 including the 6502, 65C02, and 65802. New York: Brady Books/Prentice Hall Press (Simon & Schuster, Inc). ISBN 0-89303-789-3. Rights later purchased by Western Design Center.
  • Fernandez, Judi N. (1983). 6502 Assembly Language Programming (Self-teaching Guides). John Wiley & Sons Inc. ISBN 978-0471861201.
  • Leventhal, Lance A. (1986). 6502 Assembly Language Programming 2nd Edition. Osborne/McGraw-Hill. ISBN 0-07-881216-X.
  • Zaks, Rodnay (1983). Programming the 6502 (Fourth Edition). Sybex, Inc. ISBN 0-89588-135-7.
  • Zaks, Rodnay (1982). Advanced 6502 Programming. Sybex, Inc. ISBN 0-89588-089-X.
  • Zaks, Rodnay (1980). Programming the 6502 (Third Edition). Sybex, Inc. ISBN 0-89588-046-6.

Online

  • Programming the 65816 (including the 6502, 65C02, and 65802) by Western Design Center
    1. Programmingthe65816_ProgManual.pdf — 54MBytes, created 2015/03/27.
      • This is a full scan of the original Eyes/Lichty book using full images for each page, with the added bonus of OCR being applied so that text is searchable and copy-paste-able. Accurate/reliable given the nature of the scan.
    2. Programmanual.pdf (a.k.a. WDC65C816_Program_Manual.pdf) — 1.7MBytes, created 2007/04/16.
      • This is a "pure text" version of the Eyes/Lichty book, however it is rife with very dangerous typos (wrong opcodes, etc.) in many areas, and contains a large number of formatting/layout mistakes not present in the original book. Bill Mensch (6502/65C02/65816 architect/designer) confirmed these mistakes, stating WDC is in the process of fixing them. If at all possible, use the newer PDF mentioned above.
      • It is suspected that WDC has pulled this PDF entirely from their website, instead advocating purchasing a "redone" version of the Lichty/Eyes book via Amazon. Kindle and paperback versions are available, but I (Koitsu) have not reviewed it.

Links

Retrieved from "https://www.nesdev.org/w/index.php?title=Programming_guide&oldid=21911"