VIDEOPAC tech info
If you're interested in programming games for the Videopac / Odyssey2, check
these sites first:
* Soeren Gust's homepage (Internet archive)
* Dan B's Odyssey2 Tech page
More info about the 8048 microcontroller and the videochip can be found here: Grokking the MCS-48 System
Here are some files which I use a lot when writing Videopac programs,
some files are copied from the above mentioned websites.
This file contains a dump of the internal ROM of the 8048 microcontroller, and an explanation
of the routines. I've made some corrections to the original file.
Instruction set of the 8048
A summary of the function of the registers of the Video Display Controller chip.
voice-sounds.txt A list of the sounds inside
the Voice module and the Sid the Spellbinder cartridge.
An overview of the available characters in the VDC chip.
Datasheet of the Intel 8048 microcontroller.
Datasheet of the speech chip inside the Voice module, with an explanation about allophones.
Alternative datasheet of the SP0256 speech chip, with more technical details.
Datasheet of the Plus graphics chipset of the G7400.
Circuit diagram of the Videopac G7000 part 1.
Circuit diagram of the Videopac G7000 part 2.
Circuit diagram of the Videopac G7400 part 1.
Circuit diagram of the Videopac G7400 part 2.
Circuit diagram of the Videopac G7400 part 3.
Overview of the timing of the signals inside the G7400.