0.80u2 [Bryan McPhail, Pierpaolo Prazzoli, David Haywood]
WIP:
- 0.167: Angelo Salese improved $415-6 buffer modified by M6809 "master" and read by "slave" CPU. Updated notes. Bit 3 of master CPU controls reset line for slave. Added start-up sequence but still hangs afterwards. Master CPU irq is actually tied to vblank, fixes gameplay too, now is all video related (rotation, tilemap paging and color). Might as well not mask screen drawing. Added notes.
- 0.166: Angelo Salese fixed Counter Steer booting. Spotted Slave CPU bus request line. Fixed address line swapping for Slave CPU area at 0x2000-0x2fff. Note: Game needs NMI masking for Slave CPU. Improved bus requesting, assuming that DP is involved. Fixes service mode and a bit of pre-gameplay, game still doesn't work probably due of irqs.
- 0.135u2: Fabio Priuli added save state support to Counter Steer driver.
- 0.131u1: Angelo Salese modified my coin_insertion() function to use ASSERT & CLEAR instead of PULSE_LINE.
- 0.130u1: More Counter Steer progress and improvements [Angelo Salese]. Added DAC sound.
- 13th March 2009: Angelo Salese - My road-trip pointed me to Counter Steer, the other GNW in the ZeroTarget driver. Seems to be similar but not the same HW as Zero Target, video part is improved/changed over the other game (for example the roz can do a full 360 degrees rotation) and it currently needs a kludge to let it boot due of a weirdness into the communications. Colors uses default MAME palette because proms are undumped for this one, yay...
- 0.130: Added dipswitches 'Coin A/B', 'Service Mode', 'Difficulty', 3x 'SYSTEM' and 16x 'Unknown' dipswitches.
- 0.129u6: Various improvements to the Zero Target / Counter Steer HW and cleaned-up the driver. Fixed foreground & background colors and hand-tuned sound in Zero Target based on a side-by-side test. Fixed sprite colors [Angelo Salese]. Added M6502 (1.5MHz) CPU3 and 2x AY-3-8910A (1.5MHz). Changed visible area to 240x256 and region cpu2 to audiocpu ($e000). Added 2nd coin slot. Removed buttons 2-5.
- 0.80u2: Bryan McPhail added 'Counter Steer' (Data East 1985). Various things not yet understood.
- 28th December 1998: J-ROM dumped Counter Steer (CX-24) 1985 Data East Corporation.
Recommended Games (Motorbike):
Stunt Cycle
Super Rider
Superbike
Traverse USA / Zippy Race
Excite Bike (PlayChoice-10)
Vs. Excitebike
Jumping Cross
Kick Rider
Counter Steer
Shot Rider
Battle Lane! Vol. 5
Super Cross II
Thundercade / Twin Formation
Rally Bike
Mad Motor
Cycle Warriors
Masked Riders Club Battle Race
Wild Riders
