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.
- 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
Core Utilization:
Logic utilization (in ALMs) 12,923 / 41,910 ( 31 % )
Total block memory bits 634,052 / 5,662,720 ( 11 % )
Total DSP Blocks 65 / 112 ( 58 % )
- Investigate "Zelda's Adventure" sound hiccups
- Implement audio mixing and panning
- Investigate flicker of graphics in Hotel Mario (CPU speed?)
- Investigate wrong frame in intro of Hotel Mario (probably fixed?)
- Add Interlacing
- MCD212 Add Regions
- Fixes graphics in P.A.W.S.
- Fixes graphics in Tangram
- Add RGB555
- Fixes DYUV Test on "Validation Disc"
- Investigate red bars in Hotel Mario intro
- Implement CDIC CDDA for audio cd tracks
- CDIC Fetch TOC (The Apprentice)
- CDIC Descrambler (The Apprentice)
- CDIC Byteswap (The Apprentice)
- Fix reset behaviour / Core is unstable
- Fix servo behaviour of always detecting a CD-i disc
- Use the MiSTer framework to save the NvRAM to mass storage
- Only when changes are detected and when the OSD is opened
- The N64 core does it like that too
- Add alternative input devices (a mouse)
- OSD setting for input device conformance (1200 baud)
- 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
- Difficult, as no existing software emulator can do that yet
- Analysis of real hardware probably required
- 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.