SAM Coupé

ROM

Built-in
Submitted by Dan Dooré on Friday, May 25, 2018 - 13:36.

Download

SamCoupeROMs.zip
sam_rom_v3-0_disasm_annotated.pdf

Release Year

1990

Copyrights

Copyrights Granted

Copyright Provenance

SAM Coupé ROM Images

Author

Andy Wright

Publisher

MGT

Description

Written by Andy Wright there were several ROM versions during the Sam’s lifecycle:

Version Source Details
ROM 0.1 MGT Original prototype 07-Nov-89
ROM 0.4 MGT Pre release version 04-Dec-89
ROM 1.0 MGT Original shipped ROM
ROM 1.1 MGT Pre release version
ROM 1.2 MGT Pre release version
ROM 1.3 MGT Pre release version
ROM 1.4 MGT Pre release version
ROM 1.8 MGT Pre release version
ROM 1.81 MGT Pre release version
ROM 2.0 MGT Amended ROM to fix bugs with disk bootstrap, shipped to users with an update for the MGT Utility Tapes
ROM 2.1 MGT Pre release version
ROM 2.4 MGT Pre release version
ROM 2.5 MGT Pre release version
ROM 3.0 MGT Last official release.

See Rom bugs for more info.

Variants

Version Source Details
ROM 3.0 MGT Source code on github. There are apparently 2 versions of ROM 3.0 in the wild: The original had ‘plc’ in lower case on the Splash screen, another one had ‘PLC’ in uppercase. (from Edwin Blink)
ROM 3.1 MGT Has ‘PLC’ rather than ‘plc’ but that (and the version number) is the only difference. Listed at http://zxspectrum.it.omegahg.com/MG.htm
SC_Autoboot Steve Nutting Amended V3.0 with fast reset and ‘Instant F9’
ROM 3.5 West Coast Computers Used in the Sam élite, a V3.0 with a new copyright message, replacement of keyword “DIR” with “CAT” and spelt ‘disk’ with ‘c’
Homing PROM Simon Cooke V3.0 with a custom-orderable copyright message.
HD Boot ROM Edwin Blink V3.0 with code to boot from ATOM Hard drive’s boot sector.
Trinity Boot ROM Colin Piggot V3.0 with code to boot from Trinity Ethernet Interface EEPROM.

Trivia

The current ROM version can be ascertained by typing PRINT PEEK 15 and dividing by 10 so 30 is ROM 3.0.