Cheatsheet for Z80 assembly development - contains Z80 commands details and other useful information

Download these to get started with my Z80 tutorials quickly and easily.

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[CPC] & [Z80] Learn how to get started with Winape CPC emulator (The Easiest way to work with Z80), start a simple program, compile, and run if from basic. Learn to use the Debugger to see the contents of registers and memory
[Documentation] [Video] [Forum]

Using LDIR, Compare with CP, Jumps based on conditions (JP), Symbols with EQU
  [Documentation] [Video] [Forum]

Case statement via multiple CP statements, simulating multiply and divide, passing parameters to and from basic via POKEing memory,
[Documentation] [Video] [Forum]

PUSH and POP with the stack, Compiler directives IFDEF, ELSE, ENDIF. Indirect registers IX, IY for address in register+offset
[Documentation] [Video] [Forum]

Bitwise operations - AND, OR, XOR. Bit operations SET, RES, BIT... Shifting and rotation with SLL, SRL, SLA,SRA, RLCA, RRCA, RL, RR... Carry Flags, Self modifying code. NOP - no operation
[CPC] Calls with parameters
[Documentation] [Video] [Forum]

Look up tables, ALIGN for aligned code, Undocumented registers IXH, IXL, IYH, IYL... swapping registers with EX DE,HL... Vector Tables for jumps
[CPC] Screen Co-ordinates, specifying References with @ and integers with %
[Documentation] [Video] [Forum]

RST 7 / RST &38 - interrupt handler... Interrupt mode 1 (IM1) Shadow registers EXX and EX AF,AF'... Disable interrupts (DI) Enable interrupts (EI), Stop interrupts with HALT... reading and writing to hardware via ports with IN and OUT...
[CPC] Raster color switching
[Documentation] [Video] [Forum]

I register (IM2 Interrupt address top byte) R register (memory Refresh)... DAA for Decimal Adjust Acumulator (Binary Coded Decimal)... Return from interrupts with RETI and RETN... repeated port access with IND, INDR, INI, INIR, OUTD, OTDR... alter the stack pointer with INC/DEC SP, swap with the stack with EX (SP),HL... unwrap loops... Stack Misuse
[Documentation] [Video] [Forum]

Learn how to show 'Hello World' using the firmware, Compile a program with winape, Make a Disk Image or Tape Image file for the amstrad, Make a GX4000 cartridge
[Documentation] [Video] [Forum]

Learn how to Show Hello World on the screen, Compile for the spectrum with VASM, build a DSK or TRD Disk Image for the spectrum,make a TAP tape image on the spectrum
[Documentation] [Video] [Forum]

Learn how to Make hello world for the MSX1 or MSX2, build with Vasm, Create an MSX cartridge, Make an MSX Disk image
[Documentation] [Video] [Forum]

Learn how to make Hello World on the San Coupe, build with vasm, create a Sam Coupe disk image with an 'AutoGo' file that autoloads, and run the program.
[Documentation] [Video] [Forum]

Learn how to make Hello World on the Elan Enterprise, compile with Vasm, run a program with FileIO, run a program from an Enterprise Disk Image,
[Documentation] [Video] [Forum]

Show Hello World on the Camputers Lynx, Compile with VASM, Build a Lynx TAP tape image and start it with Jynx
[Documentation] [Video] [Forum]

Make Hello world for the TI-83 calculator, Compile with VASM, convert to an executable 8XP for the TI with bin28xp, load an 8XP from within the TI calculator
[Documentation] [Video] [Forum]

Make Hello World with the Master System or Game Gear, making a valid ROM file for the master system or game gear, calculating a valid CRC checksum
[Documentation] [Video] [Forum]

Make Hello World for the Gameboy or Gameboy Color, making a gameboy romfile, calculating a valid CRC for gameboy roms
[Documentation] [Video] [Forum]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the Amstrad CPC in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the ZX Spectrum in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the Enterprise in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the Sam Coupe in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the MSX2 in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the MSX 1 in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the Camputers Lynx in a single simple ASM File
[Documentation] [Video]

Let's learn how to draw an 8x8 'tile' or a 48x48 bitmap sprite on the TI-83 in a single simple ASM File
[Documentation] [Video]

Let's learn how to set a tile or a 48x48 bitmap with multiple tiles on the Gameboy and Gameboy Color in a single simple ASM File
[Documentation] [Video]

Let's learn how to set a tile or a 48x48 bitmap with multiple tiles on the Sega Master System and Game Gear in a single simple ASM File
[Documentation] [Video]

This tutorial will teach you how to add Joystick input to the previous bitmap example
[Documentation] [Video]

Lets add keyboard input to the previous bitmap example
[Documentation] [Video]

Learn how to add Joystick input to the previous bitmap example
[Documentation] [Video]

This tutorial will teach you how to add keyboard input to the previous bitmap example
[Documentation] [Video]

Lets add Joystick input to the previous bitmap example
[Documentation] [Video]

Lets add keyboard  input to the previous bitmap example
[Documentation] [Video]

Lets learn how to perform simple text operations quickly using the OS Firmware
[Documentation] [Video]

Lets improve on last weeks tutorials and add a few more!
[Documentation] [Video]

This tutorial will teach you how to draw some bitmap graphics on the Amstrad CPC and Elan Enterprise
[Documentation] [Video]

Lets Learn how to draw some bitmap graphics on the ZX Spectrum and Sam Coupe
[Documentation] [Video]

Lets Learn how to draw some bitmap graphics on the TI-83 and MSX2
[Documentation] [Video]

This tutorial will teach you how to read the keyboard of the CPC, Speccy and Sam Coupe
[Documentation] [Video]

Lets learn how to read the keyboard of the MSX, Enterprise and TI-83
[Documentation] [Video]

This tutorial will teach you how to usine the tilemap to show images on the Sega MasterSystem and GameGear
[Documentation] [Video]

Learn about using the tilemap to show images on the Gameboy and Gameboy Color
[Documentation] [Video]

Learn about using the tilemap to show images on the MSX 1
[Documentation] [Video]

Learn about using the tilemap to show images on the MSX 2
[Documentation] [Video]

Learn about how to read from the Joystick or Joypad on the Sega Mastersystem, GameGear, Nintendo Gameboy and Gameboy color
[Documentation] [Video]

This tutorial will teach you how to configure the screen colors on the Amstrad CPC and CPC+ / GX4000
[Documentation] [Video]

Learn about how configure the screen colors on the Sam Coupe and Enterprise
[Documentation] [Video]

Learn about how configure the Palette of the MSX2 and Powergraph V9990 (V9K)
[Documentation] [Video] [Forum]

Learn about how configure the Palette of the Sega Master System, and Sega Game Gear
[Documentation] [Video] [Forum]

Learn about how configure the Palette of the Gameboy and Gameboy Color
[Documentation] [Video] [Forum]

Learn about how to use the AY sound chip to make simple sounds on a variety of Z80 systems that use it!
[Documentation] [Video]

Learn about how to make sound on the Enterprise
[Documentation] [Video] [Forum]

This tutorial will teach you how to make sound on the Sam Coupe
[Documentation] [Video] [Forum]

Learn about how to make sound on the Gameboy and Gameboy Color
[Documentation] [Video] [Forum]

Learn about how to make sound on the Sega Mastersystem and Sega Game Gear
[Documentation] [Video]

Learn about how to make simple beeps on the ZX Spectrum
[Documentation] [Video] [Forum]

Learn about how to switch in and out the extra memory on the 6128, as well as ROM and Cartridges on the GX4000, also detect RAM amount, and if we're running on a CPC+
[Documentation] [Video] [Forum]

Learn about how to page Memory and ROM with the slots on the MSX 1 and 2, and detect which slots are available, and which contain RAM or ROM
[Documentation] [Video] [Forum]

Learn about how to page in extra memory on the +2 and +3 (including Amstrad models), and detect which model we're running on
[Documentation] [Video] [Forum]

This tutorial will teach you how to page in Memory and ROM on the Elan Enterprise, and detect Memory available
[Documentation] [Video] [Forum]

Learn about how to page in Memory on the Sam Coupe
[Documentation] [Video]

Learn about how to page in Memory and ROM on the Gameboy, detect Color hardware, and Page in ROM on the MasterSystem & GameGear
[Documentation] [Video]

Learn about how to use the Sprite hardware of the Gameboy and Gameboy Color
[Documentation] [Video] [Forum]

Learn about how to use the Sprite hardware of the Master System, Game Gear and MSX
[Documentation] [Video] [Forum]

Learn about how to use the Sprite hardware of the Amstrad CPC+ or GX4000
[Documentation] [Video] [Forum]

Draw Graphics on the Campluters Lynx
[Documentation] [Video] [Forum]

Use the Beeper sound of the Lynx, Red from the Keyboard
[Documentation] [Video] [Forum]

Learn about how to play a WAVe file with the AY on CPC, MSX and Spectrum +2 / +3
[Documentation] [Video]

Learn about how to play a WAVe on the CPC+ and GX4000 quickly with DMA
[Documentation] [Video] [Forum]

Learn about how to play a WAVe on the Sam Coupe, Camputers lynx and ZX Spectrum 48k via beeper.
[Documentation] [Video]

Learn about how to play a WAVe on the Master System, Game Gear, Enterprise and Gameboys
[Documentation] [Video]

Learn about the CRTC registers that control screen shape and screen page flipping
[Documentation] [Video] [Forum]

Combine Mode 1 and 2 on the Amstrad CPC for 320x200 with 16 colors (sort of)
[Documentation] [Video]

Use the CRTC Rregisters to effect a hardware splitscreen for multiple scrolling windows
[Documentation] [Video]

Learn to use CRTC to 'clone' parts of memory, and build up a distorted screen line by line
[Documentation] [Video]

The Spectrum next allows new features on the ULA, allowing the traditional color attributes to be re-purposesd to define more new colors - lets take a look!
[Documentation] [Video]

As well as the new palette attribute settings we looked at last time, we can re-color the classic ULA colors, allowing a 'nicer' color palette, while keeping the classic spectrum screen color layout... we'll also look at 'Low Res Mode' - which uses the classic speccy memory range as a 128x96 @ 256 color screen.
[Documentation] [Video]

The basic Screen modes on the Enterprise mimic the Amstrad CPC - but the Enterprise goes one step further than the CPC - offering a 256 color 80x200 screen mode... This tutorial explains how to use it.
[Documentation] [Video] [Forum]

Lets take another look at a new feature of the NEXT - the TileMap - like many consoles the Speccy now has a hardware tilemap - allowing fast high color graphics.
[Documentation] [Video]

This tutorial covers a trick used in some games, where the 16 colors of Mode 0 are 'split' into two , to simulate 2 planes (Background and Sprites)... we'll even use it to do Anaglyph 3D on the Amstrad!
[Documentation] [Video]

In these Lessons we'll look at all the V9938 commands for graphics processing with practical examples
[Documentation] [Video]

In these Lessons we'll look at all the V9938 commands for graphics processing with practical examples
[Documentation] [Video]

This tutorial covers some of the rarer graphics modes of the MSX 2 and MSX 2+
[Documentation] [Video]

Lets take a look at some advanced Tilemap tricks on the Gameboy - This lesson teaches use of the 'window' a non-scrolling tilemap for stats onscreen, and 'splitscreen' where we change the screen on a line interrupt.
[Documentation] [Video]

This tutorial covers the use of MSX 1 mode G2 - which allows a separate bank of 256 tiles for each third of the screen, we can use this to have every tile unique onscreen, and show a full screen image.
[Documentation] [Video]

In this Lesson we'll look at software sprites on the CPC - we'll learn how to effect an X-Flip in reatlime, so our sprites can look the other way without taking up more memory
[Documentation] [Video]

The SMS Light gun is Super precise! able to detect with near pixel perfect precision - it really blows away the competition... this tutorial teaches how to create an interrupt handler to detect fire presses, and gun target.
[Documentation] [Video]

We've worked in bytes before on the CPC screen, but this time we'll look at plotting individual pixels of the CPC screen in Mode 1 or Mode 0
[Documentation] [Video]

This lesson covers the use of the Stereoscopic 3D shutter-glasses of the Sega Master system - and also covers the concept of 3D in general in terms of 2D representiation - this lesson works with Red-Cyan anaglyph 3D glasses
[Documentation] [Video]

We looked at 16 color Screen mode 4... but the SAM has a few other options... a 4 color mode (Mode 3), a Spectrum compatible mode (Mode 1), and a mode a bit like the MSX 1 (Mode 2)... Lets put them to work!
[Documentation] [Video]

The MSX has some scrolling options - but they vary depending on the MSX revision...Lets take a look at all the options!
[Documentation] [Video]