Catalogue of Arcade Emulation Software - the Absolute Reference

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Quantum (rev 2)

0.30 [Paul Forgey, Hedley Rainnie, Aaron Giles]


- quantum and quantum1: Not entirely sure what causes this, but I verified that MAME emulates Quantum (both revisions) a bit slow as compared to the original PCB. (I played two separate Quantum machines this weekend at California Extreme.) It seems to be a difference of about 10-20% - the place I notice the difference the most is in the death sequence: * Hit an object: Buzz + "Charging Up" sound. * All objects scale in with the collision point as center. * Dots scale out from center point + 2 explosion sounds, one after the other. The amount of time between each of these points is between 10% and 20% shorter on the original PCB as opposed to the emulator. MAME doesn't indicate any performance problems and shoots up past 500% when I hit F10, so I know that it is not a MAME performance issue. My guess as to this issue is that there's a small timing inaccuracy in the emulator core. quantum055yel Dorsola


- 0.108u5: Mathis Rosenhauer rewrote the Atari vector generators, using the schematics and actual state machine PROMs. The state machine is now emulated so timing should be much more realistic. Clipping hardware in bzone and others is emulated instead of hardcoded. Improved accuracy of clocks and various other bits of cleanup. Changed 68000 CPU clock speed to 6048000 Hz and added prom ($0 - AVG PROM).

- 0.72: Frank Palazzolo moved flipping and swapping API stuff from vector.c to avgdvg.c, this is specific to tempest and quantum only.

- 12th February 2002: Aaron Giles fixed the Quantum and Omega Race vector graphics bugs.

- 0.58: Changed palettesize from 256 to 32768 colors.

- 15th November 2001: Aaron Giles fixed colors in Quantum.

- 0.37b14: Fixed vector orientation to vertical.

- 5th April 2001: Nicola Salmoria fixed Tempest and Quantum screen orientation and added screen flip / rotate support to the vector routines, but the changes are not yet complete.

- 0.35b13: Zsolt Vasvari added clone Quantum (prototype).

- 6th May 1999: Zsolt Vasvari added a Quantum prototype romset.

- 0.35b3: Changed M68000 clock speed to 6MHz.

- 0.34b5: Nicola Salmoria added hiscore save in Quantum.

- 0.33b7: Paul Forgey did some fixes to Quantum.

- 0.30: Paul Forgey added Quantum (Atari 1982) and clone (version 2).

LEVELS: 99 (endless)

Other Emulators:

* Retrocade

Romset: 81 kb / 11 files / 44.8 zip