MediaWiki:Sitenotice:
2025-12-29: I have restored the wiki to a backup from the end of November. Starting in September 2025, accesses went form the 800MB-1.2GB range per month to 26GB in September, 42GB in October, and 70GB in November with most accesses originating from China. As soon as I realized what was causing all the access problems in November, I shut it down (it had reached 36GB by then) behind a password/login screen. The database had gotten corrupted, and I tried a restore from just before the spike in access but that didn't work. Thus, end of November. I still have the other daily backups so if there were any important additions in December, let me know and maybe they can be recovered. - Allen H.
Deluxe Color Computer: Difference between revisions
| Line 16: | Line 16: | ||
* Additional color burst control | * Additional color burst control | ||
* Additional address decoding to make the PSG and S6551 into the CoCo memory map | * Additional address decoding to make the PSG and S6551 into the CoCo memory map | ||
==== Memory Map ==== | |||
* $FF00 - $FF1F - PIA 0 | * $FF00 - $FF1F - PIA 0 | ||
* $FF20 - $FF2F - PIA 1 | * $FF20 - $FF2F - PIA 1 | ||
Revision as of 01:00, 19 February 2024
Deluxe Color Computer
Pre-Production Boards
Three pre-production (PP) boards for the canceled Deluxe Color Computer exist:
- Boisy Pitre has gathered two of the Deluxe pre-production boards, one from John Prickett and one from Greg Zumwalt which did not have Advanced or Deluxe ROMs.
- Brian Weiseler has Robert Kilgus' Deluxe with Advanced Color BASIC 00.00.07 ROMs intact
Hardware
The Deluxe Color Computer upgrades the Color Computer 2 to include new hardware and software features
- Motorola 6847 T1 Video Display Generator (VDG) with true lowercase and lowercase descender characters
- General Instruments AY-3-8913 Programmable Sound Generator the same as Speech/Sound Cartridge (26-3144A), Symphony-12, Philharmonic-12, or CoCo PSG
- American Megatrends (AMI) S6551P Asynchronous Communication Interface Adapter (ACIA) the same as used in the Deluxe RS232 Pak
- Additional circuitry for 60Hz timer interrupts
- Additional color burst control
- Additional address decoding to make the PSG and S6551 into the CoCo memory map
Memory Map
- $FF00 - $FF1F - PIA 0
- $FF20 - $FF2F - PIA 1
- $FF30 - Option Control Register
| Bit Position | Function |
|---|---|
| 0 | A14 |
| 1 | A15 |
| 2 | Enable above for RAM range: $4000-$7FFF |
| 3 | Alternate color set (blue / green alpha display) |
| 4 | N/A |
| 5 | N/A |
| 6 | Enable 60Hz interrupt |
| 7 | Enable cartridge select: 1 internal / 0 external |
- $FF38 AY-3-8910 Data register
- $FF39 AY-3-8910 Control Register Latch
- $FF3C SY6551 Transmit / Receive Register
- $FF3D SY6551 Read status registers
- $FF3E SY6551 Command register
- $FF3F SY6551 Control Register
Software
The Deluxe Color Computer contains an upgraded Color BASIC which merges Color BASIC, Extended Color BASIC, and Disk Extended Color BASIC into a single 32K Advanced Color BASIC ROM image.
Advanced Color BASIC includes a number of new features as well: