Minimig Board v1.0 mcu firmware

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Contents

ata18.c

Read single block (with block-size set by CMD16 to 512 by default)
AtaReadSector( lba, ReadData )
Write: 512 Byte-Mode, this will not work (read MMC and SD-card specs) with any other sector/block size then 512
AtaWriteSector( lba, WriteData )

fat1618_2.c

Card present check. If present check valid FAT16 primary partition.
FindDrive2()
Scan directory
FileSearch2(file, mode)
Point to next sector in file
FileNextSector2(file)
Read sector into buffer
FileRead2(file)

hardware.c

Disable A/D, Setup ports, Serial 115200 bps
HardwareInit()
Send SPI?
SPI(byte)
Send byte to FPGA configuration
ShiftFpga(data)

main.c

directory[] filled with filenames from the SD/MMC flashcard.

PIC Hardware init.
SD-Card init.
Check for FAT16 card present.
Configure FPGA.
Load kickstart.
Continously check for FPGA commands and run them.

main()

User interface. Controlled via up, down, select, menu commands received from OsdGetCtrl()

User()

Insert floppy image pointed to to by global <file> into <drive>

InsertFloppy( drive )

Commands::Get track status, Read track, Write track

HandleFpgaCmd(c1,c2)

Transfer rom image from MMC to FPGA

ReadRom()

Read track to FPGA.

ReadTrack(drive)

Write track from FPGA.

WriteTrack(drive)

Open a file

Open(name)

Send sector data to FPGA. Translates into Amiga floppy format sector. No insertion of clock bits.

SectorToFpga(sector,track)

osd.c

Write string to OSD
OsdWrite(n,s)
Clear buffer
OsdClear()
Enable OSD
OsdEnable()
Disable OSD
OsdDisable()
Get key
OsdGetCtrl()
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