A repo dedicated to create an FPGA implementation of the Philips CD-i to be usable for the MiSTer FPGA project
This repository is very experimental! Use at your own risk!
The first games are booting. Graphics are glitched and audio is broken.
Place cdi200.rom as boot0.rom in /media/fat/games/CD-i.
Place zx405042p__cdi_slave_2.0__b43t__zzmk9213.mc68hc705c8a_withtestrom.7206 as boot1.rom next to it.
Keep in mind that - for now - a special MiSTer Main application is required for the CD drive emulation.
The save files containing the NvRAM is compatible with the CD-i emulation of MAME.
- CD-I MONO BOARD low level test is functional
- ROM parity check passed
- Dram test passed
- Nvram test passed
- Cdic test passed (tests only memory...)
- Slave processor test passed
- MCD212
- SDRAM interface according to specification
- ICA/DCA parser partially implemented
- CLUT7 RLE partially implemented
- Display File partially implemented
- SCC68070
- UART interface accessible from MiSTer linux
- Timer IRQ implemented
- Custom bus error frames implemented
- DMA Channel 1 supported
- SLAVE
- Interface to main CPU implemented
- Answers to basic requests from main CPU
- Maneuvering device simulated with MiSTer controller input
- SERVO
- High level behaviour simulation
- CDIC
- Basic data sector reading
- MiSTer
- ISO Mounting via Menu functional
- Automatic boot rom loading for main cpu and slave
- Backup and Restore of NvRAM
Core Utilization:
Logic utilization (in ALMs) 13,571 / 41,910 ( 32 % )
Total registers 15469
Total block memory bits 634,055 / 5,662,720 ( 11 % )
Total DSP Blocks 65 / 112 ( 58 % )
- Investigate "Zelda's Adventure" sound hiccups
- Investigate crashed audio in both 2D Zelda games
- Occurs during "Help-Cutscene" when SFX is played
- Implement audio mixing and panning
- Fixes frequently used Stereo to Mono mixing in games with SFX
- Might fix weirdly mixed german + english voice in Kether
- Unmute is still a mystery. Not solved in any known CD-i emulator
- Investigate flicker of graphics in Hotel Mario (CPU speed?)
- Investigate red bars in Hotel Mario intro
- CDIC Fetch TOC (The Apprentice)
- CDIC Descrambler (The Apprentice)
- CDIC Byteswap (The Apprentice)
- Investigate weird glitches at the bottom in "Myst" gameplay when rotating
- Investigate "Gray border glitch" at the top of "Myst" gameplay (seems to be only one plane)
- Fix reset behaviour / Core is unstable
- Add auto start of titles using front panel "Play" button
- Fix servo behaviour of always detecting a CD-i disc
- Investigate desaturated colors / low contrast in "Photo CD Sample Disc"
- The colors seem to be a little bit to bright?
- For some reason MAME is really dark, also not accurate
- MCD212: Add RGB555
- Fixes DYUV Test on "Validation Disc"
- Find a solution for the video mode reset during system resets
- The ST flag is the issue here, causing a video mode change
- Add SNAC support (IR remote + wired controller)
- Refurbish I2C for the front display and show the content as picture in picture during changes?
- It might not even be required at all.
- Fix timekeeper initial time
- Playback of Audio CDs
- Possibility was proven in MAME, requires different codes from SERVO
- Other MiSTer cores can do that too, so it would be cool: (PSX, MegaCD, Saturn, PCE)
This core is tested with these ROMs:
2969341396aa61e0143dc2351aaa6ef6 cdi200.rom
3d20cf7550f1b723158b42a1fd5bac62 zx405042p__cdi_slave_2.0__b43t__zzmk9213.mc68hc705c8a_withtestrom.7206
Due to legal reasons, these files must be sourced separately.
This MiSTer core would've probably never been possible without the reverse engineering efforts of certain people. Thanks to CD-i Fan for the insights into his closed source CD-i Emulator. Also Thanks to MooglyGuy, which took on the task of implementing a CD-i emulator into MAME, which I used to analyse the program flow of the CD-i boot process.
