Z80

; This assembly code for a Z80 microprocessor is a simple example that copies data from a source array to a destination array in
; memory. Note that the Z80 assembly language may vary slightly depending on the assembler used. For this example, we will use the Z80 ; assembly syntax supported by the "z80asm" assembler.

; This program starts at address 0x0000 and defines the source array at address 0x8000 and the destination array at address 0x8100. The ; program copies 16 bytes (0x10) of data from the source array to the destination array in memory. After the copy operation is
; complete, the program enters an infinite loop.

; To assemble and run this program, save it to a file (e.g., copy_example.asm), assemble it using a Z80 assembler like "z80asm", and
; then load the resulting binary file into the EEPROM (W27C512) of your Z80 kit.

; Consult your Z80 kit's documentation for the specific steps to load the binary file into the EEPROM and run the program on your kit.

; Constants
ORG 0x0000  ; Program start address
SRC_ADDR EQU 0x8000  ; Source array start address
DST_ADDR EQU 0x8100  ; Destination array start address
ARRAY_LEN EQU 0x10  ; Array length

; Program
START:
  LD HL, SRC_ADDR  ; Load source address into HL register pair
  LD DE, DST_ADDR  ; Load destination address into DE register pair
  LD BC, ARRAY_LEN  ; Load array length into BC register pair

COPY_LOOP:
  LD A, (HL)  ; Load byte from source address into accumulator (A)
  LD (DE), A  ; Store byte from accumulator (A) to destination address
  INC HL  ; Increment source address
  INC DE  ; Increment destination address
  DEC BC  ; Decrement counter (BC register pair)
  LD A, B  ; Load B register into accumulator (A)
  OR C  ; Perform bitwise OR with C register and accumulator (A)
  JP NZ, COPY_LOOP  ; If result is not zero, jump to COPY_LOOP

HALT:
  NOP  ; No operation
  JR HALT  ; Infinite loop

; Data
ORG SRC_ADDR
DB 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10

END