1. Download the PASMO Z80 cross assembler.
2. Download and install the FUSE ZX Spectrum emulator
2. Save the following hello world! program to 'helloworld.txt'
; hello-world.z80
CHAN_OPEN equ 5633
PRINT equ 8252
org 32512
ld a, 2 ; 3E 02
call CHAN_OPEN ; CD 01 16
ld de, text ; 11 0E 7F
ld bc, textend-text ; 01 0E 00
jp PRINT ; C3 3C 20
text defb 'Hello, World!' ; 48 65 6C 6C 6F 2C 20 57
; 6F 72 6C 64 21
defb 13 ; 0D
textend equ $
3. Compile the programme into a TAP file with basic loader
.\pasmo -1 --tapbas '..\Zx Spectrum\helloworld.txt' prog.tap >> debug.txt
- -1 (digit 'one') Show debug info during both passes of assembly.
With the --tapbas option a tap file is generated with two parts: a Basic loader and a code block with the object code. The Basic loader does a CLEAR before the initial address of the code, loads the code, and executes it if a entry point is defined (see the END directive). That way you can directly launch the code in a emulator, or transfer it to a tape for use in a real Spectrum.
4. Open the prog.tap file in Fuse
Fuse will load the first part of the TAP file which is the basic loader programme
 |
| The Basic loader program |
RANDOMIZE USR 32512
To type this on a spectrum 48K keyboard
type T to enter the RANDOMIZE command then
press Shift+Ctrl (to enter Extended keyboard mode - flashing E cursor) and type 'L' for USR
then type 32512 and press return to execute
* alternatively add the directive END 32512 to the end of the helloworld program and PASMO will include the basic command to run the assembly code automatically.
