CoG GBA

CoG
File:Coggba2.png
General
Author	TheHiVE
Type	Computer
Version	0.9.7
License	Mixed
Last Updated	2004/05/30
Links
Download
Website

C.o.G is a Colecovision emulator written by TheHiVE. This emulator features superb compatibility, with sound, and configurable controls.

The emulator also comes with an easy-to-use injector. However, as the emulator has no menu system, you have to create one binary per game. Although inconvenient, the up-side of this is that Colecovision games are small, so each binary tends to be under 100k.

Screenshots

Changelog

0.9.7

• Reorganized VRAM and VDP rendering functions
• Rewrote and optimized VDP register handler
• Changes to injection process, to provide support for Pogoshell. Known ROMs are listed in binary and identified by CRC.

0.9.6'"

• Fixed VDP BL - No more mode switch glitches - video builds 'silently'.
• Fixed NMI - Interrupt should only be generated when the interrupt line changes from low to high. This fixes Pitfall! and other assorted ROMs.
  • Note: This is contrary to Sean Young's TMS9918a documentation.
• Modification to injector so that multiple binaries can be created simultaneously.

0.9.5

• Found and fixed massive error in Pogoshell plugin code.
  • Note - this is still incomplete, and buggy.
• Enabled collision detection code (via injector).
• Optimized IN port code.
• Preliminary OUT port optimizations.
• Fixed tiny bug in VDP status register.

0.9.4

• Fixed memory corruption problem.
• Fixed problems with various ROMs, including Galaxian.
• Fixed speed problem in Pitfall II, Dig Dug, Jungle Hunt, and others.
• Fixed tiny bug in input handler.
• Added customizable input handler.
• Enabled frame synchronisation.

0.9.3

• Internal debugging tool enhancements.

0.9.2

• Fixed problem with VDP register 4.
• Added double size sprite capabilities to VDP emulation.
• Disabled frame synchronisaion (for now).
• Started to add menu support.
• Enabled input customization module (not yet fully supported in injector though).
• Added SN76489A audio emulation.

0.9.1

• Enabled frame synchronisation.
• Fixed problem with VDP register 3.
• Fixed problem with Mode 2 redraws.

0.9.0

• Initial release.

Credits

Thanks to:

• Alepus, Dahak, DJammer and Leix for testing CoG so thoroughly.
• Guyfawkes and Woo for their continued support.
• Matt the Squirrel for support and suggestions.
• Sean Young for fairly concise TMS9918a documentation.
• Richard F Drushel for his Pitfall! disassembly.
• Daniel Bienvenu for the OS7Prime documentation.
• The ColecoTech author for making this emulator look awesome in comparison.

External links

• Author's website - http://www.btinternet.com/~softtec