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an_assembly_file_listing_to_generate_a_16k_rom_for_the_zx_spectrum

anonymous@undisclosed.example.com (Anonymous) — Mon, 21 Mar 2022 13:26:58 +0000

;************************************************************************
;** An Assembly File Listing to generate a 16K ROM for the ZX Spectrum **
;************************************************************************

; -------------------------
; Last updated: 13-DEC-2004
; -------------------------

; TASM cross-assembler directives. 
; ( comment out, perhaps, for other assemblers - see Notes at end.)

#define DEFB .BYTE      
#define DEFW .WORD
#define DEFM .TEXT
#define ORG  .ORG
…

assembly_listing_of_the_operating_system_of_the_sinclair_zx80

anonymous@undisclosed.example.com (Anonymous) — Mon, 21 Mar 2022 12:58:57 +0000

; ===================================================
;
; An Assembly Listing of the ROM of the Sinclair ZX80
; ---------------------------------------------------
;
; -------------------------
; Last updated: 12-SEP-2002
; -------------------------
;
; Note. This is not the original text file, which was 
; written by John Grant in 1979, but a file that 
; performs a similar function in that it assembles
; a 4K ROM file that may be used in ZX80 emulators.
;
; The…

assembly_listing_of_the_operating_system_of_the_sinclair_zx81

anonymous@undisclosed.example.com (Anonymous) — Mon, 21 Mar 2022 13:06:34 +0000

; ===========================================================
; An Assembly Listing of the Operating System of the ZX81 ROM
; ===========================================================
; -------------------------
; Last updated: 13-DEC-2004
; -------------------------
;
; Work in progress.
; This file will cross-assemble an original version of the "Improved" ZX81 ROM.  The file can be modified to change the behaviour of the ROM when used in emulators although there is no spare space avail…

version_1

anonymous@undisclosed.example.com (Anonymous) — Tue, 22 Mar 2022 09:33:10 +0000

; Disassembly of the file "C:\lab\if1-1.rom"
; 
; CPU Type: Z80
; 
; Created with dZ80 1.50
; 
; on Sunday, 28 of April 2002 at 12:33 PM
; 
; ---
;
; Last Updated: 14-JAN-2004
;
; Credits:      John Hutcheson          Documentation.
;               Geoff Wearmouth         Current Maintainer

#define DEFB .BYTE      
#define DEFW .WORD  
#define DEFM .TEXT
#define EQU  .EQU
#define ORG  .ORG

        ORG     $0000

 
; --------------------------------
; THE 'RET…

version_2

anonymous@undisclosed.example.com (Anonymous) — Tue, 22 Mar 2022 09:33:50 +0000

; Disassembly of the file "C:\lab\if1-2.rom" ; ; CPU Type: Z80 ; ; Created with dZ80 1.50 ; ; on Sunday, 28 of April 2002 at 12:35 PM ; ; ------------------------ ; last updated 14-JAN-2004 ; ------------------------ #define DEFB .BYTE #define DEFW .WORD #define DEFM .TEXT #define EQU .EQU #define ORG .ORG ORG $0000 ; --------------------------------------- ; FLAGS3 System Variable - IY+$7C ($5CB6) ; --------------------------------------- ; Bit 0 - set when executi…