From Scratchpad

OpenZXRom is a project by Matthew Westcott to produce an open source version of the ZX Spectrum ROM. As of 1 January, 2008, it's currently very much in the alpha stages, but does manage to load some commercial games successfully. This page is a place to list which games it works with, which it doesn't and why, starting with the Top 100 from WoS.

Contents 1 External links 2 Game compatibility 2.1 WoS Top 100 2.2 Other games

[edit] External links

• OpenZXRom

[edit] Game compatibility

[edit] WoS Top 100

Game	Status	Tested with version
Target; Renegade	Loader crashes [1]	2007-12-31 (r339)
Great Escape, The	Here be dragons: 0x1b76 (= check for break + continue to next BASIC line)	r349
Elite 128k	Loads and runs, freezes on launch from station	r350
R-Type	Crashes after loading first block [2]	2007-12-31 (r339)
Knight Lore	Unsupported BASIC command: 0xd7 (BEEP)	2007-12-31 (r339)
Exolon	Works	2007-12-31 (r339)
Manic Miner	Works	2007-12-31 (r339)
Robin of the Wood	Unsupported BASIC command: 0xf1 (LET)	2007-12-31 (r339)
Atic Atac	Unsupported BASIC command: 0xd7 (BEEP)	2007-12-31 (r339)
Match Point	Unsupported BASIC command: 0xeb (FOR)	2007-12-31 (r339)
Abadia del Crimen, La	N/A (128K only)
Lords of Midnight, The	Works	r341
Highway Encounter	Syntax error at: 0x04ec	r343
Everyone's a Wally	Syntax error at: 0x14a5 (PRINT #n)	r355
Turbo Esprit	Turbo loader on side 1: Unsupported BASIC command: 0xf1 (LET) Standard speed loader on side 2: Crashes after loading screen [3]	2007-12-31 (r339)
Match Day II	Unsupported BASIC command: 0xf7 (RUN)	2007-12-31 (r339)
Jack the Nipper II: In Coconut Capers	Works	r349
Hyper Sports	Syntax error at: 0x04ec	r343
Head over Heels	Here be dragons: 0x1b76 (= check for break + continue to next BASIC line)	r348
Bubble Bobble	Crashes after loading [4]	r350
Tomahawk	Unsupported BASIC command: 0xeb (FOR)	2007-12-31 (r339)
Soldier of Fortune	Works	2007-12-31 (r339)
Skool Daze	Works	r345
Saboteur II: Avenging Angel	Unsupported function: 0xb0 (VAL)	2007-12-31 (r339)
Saboteur	Unsupported function: 0xb0 (VAL)	2007-12-31 (r339)
Chaos	Can't recognise last standard loader block following loading screen on Fuse.	r350
Where Time Stood Still	N/A (128K only)
Sentinel, The	Crashes before loading screen [5]	r350
Nether Earth	Works	r350
Rainbow Islands	Unsupported BASIC command: 0xf1 (LET)	2007-12-31 (r339)
Bomb Jack	Crashes when game started	r350
Academy	Side 1: crashes	2007-12-31 (r339)
Starquake	Stops with a Program finished message	2007-12-31 (r339)
Laser Squad	Loads, Here be dragons: 0x0562 (= slightly later entry point to load_bytes) on selecting mission	r350
Green Beret	Here be dragons: 0x1b76 (= check for break + continue to next BASIC line)	r348
Formula One	Seems to need LOAD "" CODE?	2007-12-31 (r339)
Firelord	Just prints Program finished	2007-12-31 (r339)
Emlyn Hughes International Soccer	Prints Out of range after loading screen	2007-12-31 (r339)
Back to Skool	Works	r345
Striker	Unsupported function: 0xb0 (VAL) after loading screen	r350
Sir Fred	Crashes after loading	r348
Rebelstar	Loads, keyboard unresponsive	r350
Batman	Crashes after loading	r343
Jetpac	Unsupported BASIC command: 0xd7 (BEEP)	2007-12-31 (r339)
Wheelie	Resets before loading screen	r350
Quazatron	Unsupported BASIC command: 0xb9 (EXP)	2007-12-31 (r339)
Operation Wolf	Crashes	2007-12-31 (r339)
Lords of Chaos	0x0562 (= slightly later entry point to load_bytes)	2007-12-31 (r339)
Last Ninja 2	Resets	2007-12-31 (r339)
Jet Set Willy	Unsupported BASIC command: 0xeb (FOR)	2007-12-31 (r339)
Fairlight	Unsupported BASIC command: 0xb0 (VAL)	2007-12-31 (r339)
Sim City	Works	2007-12-31 (r339)
Rex	Works	r350
Myth: History in the Making	Crashes after loading first block	2007-12-31 (r339)
Movie	Unsupported function: 0xb0 (VAL)	2007-12-31 (r339)
Deflektor	Crashes loading first block	2007-12-31 (r339)
Chuckie Egg	Unsupported calculator op: 0xa4 after loading	2007-12-31 (r339)
Chase H.Q.	Unsupported BASIC command: 0xf1 (LET)	2007-12-31 (r339)
Batman - The Movie	Unsupported BASIC command: 0xf1 (LET)	2007-12-31 (r339)
Way of the Exploding Fist, The	Unsupported BASIC command: 0xeb (FOR)	r350
Ant Attack	0x0036 (= mid-instruction in original ROM, probably in error)	2007-12-31 (r339)
Tau Ceti	Syntax error at: 0x1107	2007-12-31 (r339)
Heavy on the Magick	Works	r341
Dragontorc	Unsupported BASIC command: 0xb9 (EXP)	2007-12-31 (r339)
Double, The	Crashes after loading first block	2007-12-31 (r339)
Doomdark's Revenge	Unsupported BASIC command: 0xeb (FOR)	2007-12-31 (r339)
Zynaps	Works	2007-12-31 (r339)
Sky Ranger	Works	r341
Ranarama	Crashes at very end of loading	2007-12-31 (r339)
Paris-Dakar	Unprintable character: 0xcc (keyword TO)	r345
Flying Shark	Crashes before loading screen	r350
Arnhem	Loads, but selecting any option freezes game	r350
Sabre Wulf	Unsupported BASIC command: 0xd7 (BEEP)	r350
Match Day	Syntax error at: 0x04ec	r343
Commando	Works	2007-12-31 (r339)
Stunt Car Racer	Unsupported BASIC command: 0xf1 (LET)	r350
RoboCop	Crashes	2007-12-31 (r339)
Penetrator	Unsupported BASIC command: 0xeb (FOR)	r350
Nebulus	Works	2007-12-31 (r339)
Bruce Lee	Syntax error at: 0x04ec	r343
Daley Thompson's Decathlon	Syntax error at: 0x0317	2007-12-31 (r339)
Cyclone	Syntax error at: 0x0317	2007-12-31 (r339)
Fire 'n Ice	Never going to work (needs TR-DOS)
Dizzy	Works	2007-12-31 (r339)
Wriggler	Unsupported BASIC command: 0xf1 (LET)	2007-12-31 (r339)
Tai-Pan	Resets before loading screen	r348
Arkanoid	Here be dragons: 0x1b76 (= check for break + continue to next BASIC line)	r348
Football Manager	Unsupported BASIC command: 0xde (OVER); BASIC game, is unlikely to run without loads of work	r352
Renegade	Resets before loading screen	r348
Football Director	Unsupported BASIC command: 0xe9 (DIM) after loading - another BASIC game?	r350
Nigel Mansell's Grand Prix	Unprintable character: 0xa7 after first loader (keyword token PI)	2007-12-31 (r339)
Tir Na Nog	Loads, keyboard unresponsive (Code assumes IY is pointing at system variables)	r355
Gunfright	Unsupported calculator op: 0x2e after loading screen	r350
Ikari Warriors	Syntax error at: 0x2ed1	2007-12-31 (r339)
Battle Ships	Syntax error at: 0x2ed1	2007-12-31 (r339)
Avalon	Unsupported function: 0xb9 (EXP)	2007-12-31 (r339)
Light Corridor, The	Unsupported function: 0xb2 (SIN)	2007-12-31 (r339)
Journey's End	Unsupported BASIC command: 0xf1 (LET) after loading screen	r350
Three Weeks in Paradise	Syntax error at: 0x14a5 (PRINT #n)	r355
Light Force	Loads, but then 0x03b6 when starting game (= beeper)	2007-12-31 (r339)

[edit] Other games

Game	Status	Tested with version
1942	Works	r345
Adventure Quest	Unsupported BASIC command: 0xf1 (LET)	r357
Agent X	Unsupported function: 0xb2 (SIN)	2008-01-07
Agent X II	Unsupported function: 0xb0 (VAL)	2008-01-07
Airwolf	Loads but crashes afterwards	2007-12-31 (r339)
Alien 8	Syntax error at: 0x04ec	r343
Amaurote	Works	2007-12-31 (r339)
Ano Gaia	Unsupported function: 0xc3 (NOT)	2008-01-07
Aquaplane	Works	r350
Army Moves	Unsupported function: 0xc3 (NOT)	2008-01-07
Astroball	Unsupported function: 0xb0 (VAL)	2008-01-07
Athena	48K: resets before loading screen	r350
Auf Wiedersehen Monty	0x05c4 (= middle of tape loading routine)	2007-12-31 (r339)
Automania	Here be dragons: 0x0006 (= mid-instruction in original ROM, probably in error)	r350
Avenger	0x05c4 (= middle of tape loading routine)	2007-12-31 (r339)
Battlecars	Unsupported function: 0xb0 (VAL). NB Lots of BASIC in this game.	r350
Behind Closed Doors	Here be dragons: 0x19e5 (= reclaim memory area)	r352
Big Sleaze, The	Here be dragons: 0x19e5 (= reclaim memory area)	r352
Birds and the Bees, The	Works	2008-01-07
Bobby Bearing	Resets after first loader block	2007-12-31 (r339)
Bored of the Rings	Unsupported BASIC command: 0xf1 (LET)	r343
Boulder Dash	Unsupported BASIC command: 0xeb (FOR)	2007-12-31 (r339)
Bounder	0x05c4 (= middle of tape loading routine)	2007-12-31 (r339)
Bounty Bob Strikes Back	Syntax error at: 0x04ec	r343
Brian Bloodaxe	0x05c4 (= middle of tape loading routine)	2007-12-31 (r339)
Buggy Boy	Here be dragons: 0x0562 (= slightly later entry point to load_bytes)	2008-01-07
Bugsy	Unsupported function: 0xc3 (NOT)	2007-12-31 (r339)
Bumpy	Unsupported BASIC command: 0xde (OVER) - after loading screen	2008-01-07
Challenge of the Gobots (DroSoft re-release)	Crashes after loading	r355
Chequered Flag	Unsupported function: 0xb0 (VAL)	2008-01-07
Chronos	Unsupported function: 0xa7 (PI)	2008-01-07
Cobra	Crashes / Resets after first loader block[6]	2008-01-07
Colossal Adventure	Unsupported BASIC command: 0xf1 (LET)	r357
Colour of Magic, The	Crashes	2007-12-31 (r339)
Computer Scrabble	Unsupported function: 0xb0 (VAL)	2008-01-07
Contact Sam Cruise	Works	r345
Costa Capers	Resets after loading	2007-12-31 (r339)
Cybernoid	Works	2008-01-07
Dark Star	Unsupported BASIC command: 0xf1 (LET)	2008-01-07
Day In The Life, A	0x05c4 (= middle of tape loading routine)	2007-12-31 (r339)
Deathchase	Works	2007-12-31 (r339)
Deviants	Works	2007-12-31 (r339)
Dungeon Adventure	Unsupported BASIC command: 0xf1 (LET)	r357
Eric and the Floaters	Crashes before loading screen	r350
Falcon Patrol 2	0x0005 (= basically a reset. Presumably a bug or anti-hack mechanism) [7]	2007-12-31 (r339)
Full Throttle	Unsupported BASIC command: 0xf1 (LET)	2008-01-07
Future Knight	0x05c4 (= middle of tape loading routine)	2007-12-31 (r339)
G.I. Hero	Works	r350
Hero Quest	Unsupported BASIC command: 0xf1 (LET)	2008-01-07
Hobbit, The (v1.2)	Works	2008-01-07
Horace and the Spiders	Unsupported BASIC command: 0xeb (FOR)	2008-01-07
Horace Goes Skiing	Unsupported BASIC command: 0xf1 (LET)	2008-01-07
I, Ball	Out of range	2008-01-07
I, Of The Mask (Bleepload)	Crashes after first set of Bleepload blocks	r357
International Rugby	Unsupported BASIC command: 0xeb (FOR)	2008-01-07
Impossaball	Works	2008-01-07
Juggernaut	Unprintable character: 0x84 (block graphic)	r351
Jack the Nipper	Syntax error at 0x05c4	2008-01-07
Jumping Jack	Freezes during loader animation with "out of range" error	2008-01-07
New Zealand Story, The	Syntax error at 0x04f7	2008-01-07
Nightmare Rally	Here be dragons: 0x1B76	2008-01-07
Megablast!	Unsupported function: 0xc3 (NOT)	2008-01-07
Micronaut One	Works	2008-01-07
Midnight Resistance	Syntax error at 0x04f7	2008-01-07
Moon Cresta	Unsupported BASIC command: 0xeb (FOR)	2007-12-31 (r339)
Out Run	Unprintable character: 0xf7 (keyword token RUN)	2008-01-07
Pac-Man	Stops with Program finished error	2008-01-07
Paperboy	0x03b5 on starting a game (= beeper)	2007-12-31 (r339)
Peking	Unsupported function: 0xc3 (NOT)	2008-01-07
Pinball Wizard	Freezes after loading	2008-01-07
Pipe Mania	Unsupported BASIC command: 0xf1 (LET)	2008-01-07
Pippo	Crashes after loading first header	2008-01-07
Psycho Pigs UXB	Resets after first loader block	2007-12-31 (r339)
Roller Coaster	Here be dragons: 0x1ada after loading	r350
Smash TV	Here be dragons: 0x04f7	2008-01-07
Space Crusade	Works	2008-01-07
Space Raiders	Works	2008-01-07
Splat!	Unsupported BASIC command: 0xeb (FOR)	2008-01-07
Starion	Works	2008-01-07
Starstrike II	Fails at initial 'Program:' (most likely CHR$ 8 in filename)	2007-12-31 (r339)
Stop The Express	Crashes before loading screen	r350
Sub Track	Loads, but freezes with "out of range" error on instructions screen	2008-01-07
Tank Trax	Unsupported BASIC command: 0xf1 (LET)	2008-01-07
Technician Ted	0x1e7d (= just an OUT (C),A / RET here)[8]	2007-12-31 (r339)
Teenage Mutant Hero Turtles	Works	2008-01-07
Tetris (48k)	Here be dragons: 0x62F4	2008-01-07
Trap Door	0x0200 (? jump made in error - partway through keyword table)	2007-12-31 (r339)
Turbo the Tortoise	Works	2008-01-07
Turrican	Syntax error at 0x04f7	2008-01-07
Universal Hero	Unsupported BASIC command: 0xeb (FOR)	2008-01-07
Vectron	Loads, but freezes after choosing a menu option	2008-01-07
Who Dares Wins II	Unprintable character: 0xaa (keyword token SCREEN$)	r350
XOR	Works	2008-01-07
Zig Zag	Crashes after loading	r350
Zub	Works, but has some graphics glitches	2008-01-07

1. ↑ The crash appears to be due to the method used to embed the Speedlock 7 loader in BASIC; if you use an emulator with the standard Spectrum ROM to freeze the loader on execution and dump it (0x5D06 - 0x6AF5), then load the dumped memory block into an emulator with OpenZXRom and begin execution from 0x5D06, the loader will then decrypt and run without problems. The game itself works up until the end of the first level, at which point it stops at 0x0562 when trying to load the second level from tape.
2. ↑ The crash appears to be due to the method used to embed the Speedlock 4 loader in BASIC; if you use an emulator with the standard Spectrum ROM to freeze the loader on execution and dump it, then load the dumped memory block into an emulator with OpenZXRom and begin execution from 0x5D06, the loader will then decrypt and run without problems. The game itself appears to work perfectly; I successfully tested it up to the beginning of the second level.
3. ↑ Screen is actually 0x1C00 bytes loaded using LOAD"" CODE 16384, and all hell breaks loose when loading finishes.
4. ↑ At least under Fuse there are problems with recognising the BASIC header.
5. ↑ At least under Fuse there are problems with recognising the BASIC header.
6. ↑ I was able to get the loader to run in a similar fashion to some of the Speedlock games I've tried but the process was a little more involved; I had to create a makeshift manual snapshot by freezing and dumping the loader and noting the current state of the registers using the standard ROM. Loading the dump back into memory and recreating the state of the registers allowed the loader to run in OpenZXRom. The game itself crashes when you pick up a weapons burger, ending up in an infinite loop at 0x0DE7.
7. ↑ If you use an emulator (with the standard Spectrum ROM) to freeze the loader on execution (0x5D11 on a regular 48K Spectrum), dump the loader (0x5D11 - 0x5E1A) then use bin2rem on the dumped loader it actually works, so the problem appears to be with the method of storing the m/c loader in the BASIC program rather than with the loader itself. After the game has loaded, it stops at 0x03B5.
8. ↑ On adding this stub in the right location, the loader resets a couple of seconds before the end.