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6502 Resources

Resources related to these tutorials

6502 Cheatsheet - Commands and info
Cheatsheet for 6502 assembly development - contains 6502, 65C02 and 6280 opcodes - also some 65816
DevToos - My collection of 6502 Development tools and scripts
Download these to get started with my 6502 tutorials quickly and easily.
Sources.7z - All sourcecode for my tutorials
Download this to get all the source code for my tutorials

6502 Tutorials

Basic 6502 tutorials - lets learn how to start programming the 6502

Lesson 1 - Getting started with 6502 [6502]
Learn the basics of using VASM as an assembler, We'll cover the 'template' ASM file used by these tutorials, and look at the basic registers and numbers. Well also look at ADDition and SUBtraction, Jumping to subroutines (JSR), labels and moving data between registers with TXA,TYA,TAX,TAY. We'll also cover Loading and saving to and from memory.
[Documentation] [Video] [Forum]
Lesson 2 - Addressing modes on the 6502 [6502]
The 6502 has a wide variety of 'addressing modes' - Each addressing mode will change the way the final address a command loads from or saves to works, we can used fixed addresses, registers and many clever combinations!... we'll look at each with practical examples
[Documentation] [Video] [Forum]
Lesson 3 - Loops and Conditions [6502]
We'll cover starting a program with ORG, labels, SEI for disabling interrupts, symbols with EQU, INC and DEC for + or - 1...
Branches: BEQ BNE, BCS,BCC and many more! Compare with CMP, CPX, CPY... Jump with JMP, or subs with JSR... using BVC to simulate missing BRA
[Documentation] [Video] [Forum]
Lesson 4 - Stacks and Math [6502]
The Stack is a temporary store we can transfer data into with PHA/PLA or PHP/PLP.. we'll also look at negative numbers, Conditional assembly with IFDEF, macros, and using 16 bit on the 8 bit 6502... also we'll take a look at how to effect simple multiplication or division on the 6502
[Documentation] [Video] [Forum]
Lesson 5 - Bits and Shifts [6502]
Logical Operations AND, ORA and EOR... bit rotation with ROL, ROR, ASL and LSR... bit test with BIT.. doing nothing with NOP
[Documentation] [Video] [Forum]
Lesson 6 - Defined data, Aligned data... Lookup Tables, Vector Tables, and Self-modifying code! [6502]
Defining data with DB, DW and DS...reading values Lookup tables, jumping to locations in Vector Tables, Self Modifying code - code that rewrites itself!
[Documentation] [Video]

Advanced Series

More advanced topics - look at these after the main series

Lesson A1 - Extra commands in the 65c02 (Snes,Lynx & Apple II) and 6280 (PC Engine) processor [6502]
Many useful commands were added to the 6502. Lets learn about the extra commands that were added to the successor to the 65c02 and and 6280
[Documentation] [Video] [Forum]

Hello World

Get Hello World on your favorite 8 bit machine with a single ASM file!

Lesson H1 - Hello World on the BBC Micro! [BBC]
Lets learn how to make a simple 'Hello World' on the Classic BBC Micro, we'll learn how to write the code, compile it with VASM, convert it to a disk image, and load it on an emulator
[Documentation] [Video]
Lesson H2 - Hello World on the C64 [C64]
Lets learn how to make a simple 'Hello World' on the Commodore 64, we'll learn how to write the code, compile a .PRG with VASM, and load it on an emulator
[Documentation] [Video]
Lesson H3 - Hello World on the VIC-20 [VIC]
Lets learn how to make a simple 'Hello World' on the VIC-20, we'll learn how to write the code, compile a .PRG with VASM, and load it on an emulator
[Documentation] [Video]
Lesson H4 - Hello World on the Atari 800 / 5200 [A52] [A80]
Lets learn how to make a simple 'Hello World' on the Atari 800 or Atari 5200, we'll learn how to write the code, compile a ROM with VASM, and load it on an emulator
[Documentation] [Video]
Lesson H5 - Hello World on the Apple II [AP2]
Lets learn how to make a simple 'Hello World' on the Commodore 64, we'll learn how to write the code, compile it with VASM, transfer it to a disk image, and load it on an emulator
[Documentation] [Video]
Lesson H6 - Hello World on the Atari Lynx [LNX]
Lets learn how to make a simple 'Hello World' on the Atari Lynx, we'll learn how to write the code, compile an unencrypted object file (.o) with VASM, and load it on an emulator
[Documentation] [Video]
Lesson H7 - Hello World on the Nes / Famicom [NES]
Lets learn how to make a simple 'Hello World' on the Nintendo Entertainment system, or Nintendo Famicom, we'll learn how to write the code, compile a NES ROM with VASM, and load it on an emulator
[Documentation] [Video]
Lesson H8 - Hello World on the SNES / Super Famicom [SNS]
Lets learn how to make a simple 'Hello World' on the Super Nintendo Entertainment System (AKA Super Famicom), we'll learn how to write the code, compile a SFC ROM, and load it on an emulator
[Documentation] [Video]
Lesson H9 - Hello World on the PC Engine/TurboGrafx-16 Card [PCE]
Lets learn how to make a simple 'Hello World' on the PC Engine (sold as the TurboGrafx 16 in the west), we'll learn how to write the code, compile a .PCE ROM with VASM, and load it on an emulator
[Documentation] [Video]

Simple Series

Basic Tutorials doing common game programming tasks in a single ASM file

Lesson S1 - Bitmap Drawing on the BBC [BBC]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the bitmap screen
[Documentation] [Video]
Lesson S2 - Bitmap Drawing on the C64 [C64]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the bitmap screen... we'll test this in 2 and 4 color mode
[Documentation] [Video]
Lesson S3 - Bitmap Drawing on the VIC-20 [VIC]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using custom VIC 20 characters.
[Documentation] [Video]
Lesson S4 - Bitmap Drawing on the Atari 800 / 5200 [A52] [A80]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the bitmap screen in 4 or 2 color
[Documentation] [Video]
Lesson S5 - Bitmap Drawing on the Apple II [A52] [A80]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the bitmap screen.
[Documentation] [Video]
Lesson S6 - Bitmap Drawing on the Atari Lynx [LNX]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the bitmap screen.
[Documentation] [Video]
Lesson S7 - Bitmap Drawing on the Nes / Famicom [NES]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the Tile map.
[Documentation] [Video]
Lesson S8 - Bitmap Drawing on the SNES / Super Famicom [SNS]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the Tile map.
[Documentation] [Video]
Lesson S9 - Bitmap Drawing on the on the PC Engine/TurboGrafx-16 Card [PCE]
Lets look at a simple example of drawing an 8x8 smiley, and a 48x48 bitmap of our mascot using the Tile map.
[Documentation] [Video]

Platform Specific Series

Now we know the basics, lets look at the details of the platforms we're covering. We'll need to understand the hardware to figure out how to make it do what we need.

Lesson P1 - Bitmap Functions on the BBC [BBC]
In this lesson we'll take a look at the BBC screen layout, we'll learn how to set up the screen, calculate memory addresses for screen location and draw on the screen
[Documentation] [Video] [Forum]
Lesson P2 - Bitmap Functions on the Atari 800 / 5200 [A52] [A80]
In this lesson we'll take a look at the Atari 800 and 5200 screen, we'll learn how to set up the screen, calculate memory addresses for screen location and draw on the screen
[Documentation] [Video] [Forum]
Lesson P3 - Bitmap Functions on the Apple II [AP2]
In this lesson we'll take a look at the Apple II screen layout, we'll learn how to set up the screen, calculate memory addresses for screen location and draw on the screen, we'll also cover how the colors work on the Apple 2
[Documentation] [Video] [Forum]
Lesson P4 - Bitmap Functions on the Atari Lynx [LNX]
In this lesson we'll take a look at the Atari Lynx screen layout, we'll learn how to set up the screen, calculate memory addresses for screen location and draw on the screen.
[Documentation] [Video] [Forum]
Lesson P5 - Bitmap Functions on the PC Engine (TurboGrafx-16) [PCE]
In this lesson we'll take a look at the PC Engine Tilemap, we'll learn how to set up the screen, calculate memory addresses for screen location and draw on the screen with tiles.
[Documentation] [Video] [Forum]
Lesson P6 - Bitmap Functions on the NES / Famicom [NES]
In this lesson we'll take a look at the Nintendo Entertainment system / Famicom TileMap, we'll learn how to set up the screen, Define tiles, and draw them to the screen.
[Documentation] [Video] [Forum]
Lesson P7 - Bitmap Functions on the SNES / Super Famicom [SNS]
In this lesson we'll take a look at the Super Nintendo Entertainment System Tilemap, we'll learn how to set up the screen, Define Tiles and draw on the screen.
[Documentation] [Video] [Forum]
Lesson P8 - Bitmap Functions on the VIC-20 [VIC]
In this lesson we'll take a look at the VIC 20 screen layout, we'll learn how to set up the screen, define custom characters and draw on the screen.
[Documentation] [Video] [Forum]
Lesson P9 - Bitmap Functions on the C64 [C64]
In this lesson we'll take a look at the Commodore 64 screen layout, we'll learn how to set up the screen, Calculate locations and draw on the screen, we'll also learn how the 2 and 4 color modes work, and the addresses color attributes use.
[Documentation] [Video] [Forum]
Lesson P10 - Joystick Reading on the BBC [BBC]
Lets take a look at the BBC Joystick - we'll learn how to read the port, and convert to a 'digital' 4 direction input for easy programming
[Documentation] [Video] [Forum]
Lesson P11 - Joystick Reading on the Atari 800 / 5200 [A52] [A80]
The Atari 800 and 5200 are actually quite different when it comes to Joystick / Paddle reading, lets take
[Documentation] [Video] [Forum]
Lesson P12 - Joystick Reading on the Apple II [AP2]
Lets take a look at the Apple 2 Joystick- we'll learn how to read the port, and convert to a 'digital' 4 direction input for easy programming
[Documentation] [Video] [Forum]
Lesson P13 - Joystick Reading on the Atari Lynx [LNX]
In this lesson we'll take a look at the VIC 20 screen layout, we'll learn how to set up the screen, define custom characters and draw on the screen.
[Documentation] [Video] [Forum]
Lesson P14 - Joystick Reading on the PC Engine (TurboGrafx-16) [PCE]
Lets take a look at the PC-Engine Joypad, we'll learn how to read the Joypad ports and get the direction and fire buttons
[Documentation] [Video] [Forum]
Lesson P15 - Joystick Reading on the NES / Famicom and SNES [NES][SNS]
Lets take a look at the Nintendo Entertainment System and Super Nintendo Joypad, we'll learn how to read the Joypad ports and get the direction and fire buttons
[Documentation] [Video] [Forum]
Lesson P16 - Joystick Reading on the VIC-20 [VIC]
Lets take a look at reading joystick controls on the VIC20 and get the direction and fire buttons
[Documentation] [Video] [Forum]
Lesson P17 - Palette definitions on the BBC [BBC]
Lets learn about color definitions of the BBC Micro and how to select the visible colors from the BBC palette
[Documentation] [Video]
Lesson P18 - Palette definitions on the Atari 800 / 5200 [A52] [A80]
This tutorial will teach you how to set the Palette on the Atari computer 800 and Atari 5200 console
[Documentation] [Video]
Lesson P19 - Palette definitions on the Atari Lynx [LNX]
Learn how to set the Palette on the Atari Lynx
[Documentation] [Video]
Lesson P20 - Palette definitions on the PC Engine (TurboGrafx-16) [PCE]
This Tutorial will help you learn how to set the color Palette on the PC Engine or TurboGrafx 16
[Documentation] [Video]
Lesson P21 - Palette Definitions on the NES [NES]
Learn how to set the color Palette on the Nintendo Entertainment System or Nintendo Famicom
[Documentation] [Video]
Lesson P22 - Palette Definitions on the SNES / Super Famicom [SNS]
Learn how to set the color Palette on the Super NES
[Documentation] [Video]
Lesson P22 (z80) - Sound with the SN76489 on the BBC Micro [BBC]
Learn how to make sound on the BBC, this was a z80 tutorial, but covers the 6502 BBC as well
[Documentation] [Video]
Lesson P23 - Sound on the Atari 800 / 5200 [A52] [A80]
This tutorial will teach you how to make simple sounds on the Atari 800 and Atari 5200
[Documentation] [Video]
Lesson P23 (Z80) - Sound with the 'Beeper' on the Apple II [AP2]
Learn how to make simple sounds on the Apple II, this was a z80 tutorial, but covers the 6502 Apple 2 as well
[Documentation] [Video]
Lesson P24 - Sound on the Atari Lynx [LNX]
Learn how to make simple sounds on the Atari Lynx
[Documentation] [Video]
Lesson P25 - Sound on the PC Engine (TurboGrafx-16) [PCE]
Learn how to make simple sounds on the PC-Engine
[Documentation] [Video]
Lesson P26 - Sound on the NES / Famicom [NES]
Learn how to make simple sounds on the Nintendo Entertainment System or Famicom
[Documentation] [Video]
Lesson P27 - Sound on the SNES / Super Famicom: the SPC700 [SNS]
This Tutorial will help you learn how to make simple sounds on the Super Nintendo
[Documentation] [Video]
Lesson P28 - Sound on the SNES / Super Famicom: Writing ChibiSound [SNS]
Learn how to make simple sounds on the Super NES
[Documentation] [Video]
Lesson P29 - Sound on the on the VIC-20 [VIC]
Learn how to make simple sounds on the VIC 20
[Documentation] [Video]
Lesson P30 - Sound on the C64 [C64]
This Tutorial will help you learn how to make simple sounds on the Commodore 64
[Documentation] [Video]
Lesson P31 - Hardware Sprites on the Atari 800 / 5200 [A52] [A80]
Learn how to draw sprites on the Atari 800 Computer or Atari 5200 Console
[Documentation] [Video]
Lesson P32 - Hardware sprites on the Atari Lynx [LNX]
This Tutorial will help you learn how to use the sprite hardware to render sprites on the Atari Lynx
[Documentation] [Video]
Lesson P33 - Hardware Sprites on the PC Engine (TurboGrafx-16) [PCE]
Learn how to use sprites on the PC Engine
[Documentation] [Video] [Forum]
Lesson P34 - Hardware Sprites on the NES / Famicom [NES]
Lets learn how to use hardware sprites on the Nintendo Entertainment System or Famicom
[Documentation] [Video]
Lesson P35 - Hardware Sprites on the SNES / Super Famicom [SNS]
This tutorial will show you how to use sprites on the Super Nintendo Entertainment System (Super Nes)
[Documentation] [Video]
Lesson P36 - Hardware Sprites on the C64 [C64]
Learn how to make simple sounds on the C64
[Documentation] [Video]