8 Commits

Author SHA1 Message Date
Andre Zeps
db44bc7304 MCD212: Fixed switch from CLUT to DYUV without VSR reload
- Display file reader now avoids writing bitmap data into the pipeline
  during a blank phase
- Fixes graphical corruption during fade transition in "Lost Eden"
  (noticable in first area when going forward and then back)
2025-11-23 21:10:11 +01:00
Andre Zeps
2995dcb826 Add components for booting software from disc
- Implement data reading state machine in CDIC
- Implement required interface to HPS for reading
  cd sector data
- Add DMA support to CPU which is required
  by the CDIC driver to get sector data into main
  memory
- Add INT1 and INT2 to SCC68070
- Can boot into the demo of Frog Feast
- Servo HLE fixed to closed tray with
  inserted CDi medium
- Add video IRQ
2024-09-20 21:51:32 +02:00
Andre Zeps
d05f1fb295 Slave controller features
- Added servo controller SPI fake communication
  Behaves as a closed but empty tray
- Added pointing device emulation
  MiSTer joystick data used as input
  Behaves like a maneuvering device
- Added SCI IRQ to 6805 cpu core
- Added SPI and SCI to 6805 uC
- Fixed spurious 68k chip select for slave
- Added documentation about I2C to the Front LCD
- Simulated U3090MG no longer causes front panel button presses
  Lead to spurious IRQs before
- Removal of slave memory patches
2024-09-03 11:58:26 +02:00
Andre Zeps
74bff4c5ce Removed slave rom from FPGA bitstream
Added ioctl_download for slave rom
boot0.rom is expected to be the main cpu rom
boot1.rom is expected to be the slave rom
2024-08-18 20:02:33 +02:00
Andre Zeps
738bd44379 Boot fixes and video implementation
- Attach display file and ICA to SDRAM
- Fixed byte order of 8 bit accesses by CPU
- Added SDRAM burst mode to fix video timing
- Fixed missing reset behavior of some components
- Added optional SDRAM zeroing
- Added SDRAM refresh during ROM download
- Added OS aware syscall parser to simulation
- Fixed SCC68070 on-chip interrupt autovector
- Fixed SCC68070 Timer0 frequency
- Added video pixel data FIFO
- Changed SDRAM auto refresh command
2024-08-17 22:32:51 +02:00
Andre Zeps
d20230609b Low level test functional
- SDRAM controller added
- fixed 6805 bus timing with clk enable signal
- fixed 6805 latch warnings in quartus
- added 6805 reset logic
- added 6805 ram zeroing after reset
- fixed synthesis and timing of CDIC memory
- MCD212 cpu bridge interfaces with SDRAM
- fixed NvRAM memory timing
- fixed spurious sdram access in reset
- removed fake display_active flag
- added SDRAM refresh logic
- added real UART to SCC68070
- switched simulation top level to real MiSTer core

video is corrupted and needs fixes
2024-07-29 20:52:21 +02:00
Andre Zeps
29005d5c2a MCD212 video demo
- CLUT7 RLE
- Video timing according to datasheet
- Example framebuffer in block ram
  as SDRAM interface is not finished yet
- simulation can export video signal to PNG
- design can be synthesized and fitted but CPU parts are not functional
2024-07-29 20:04:42 +02:00
Andre Zeps
b99ab86b09 First public release
- SCC68070 is booting cdi200.rom
- SLAVE is communicating with the CPU
- MCD212 only implements memory map
- IRQs incomplete
- CDIC missing
- MiSTer interface missing
2024-07-08 19:22:59 +02:00