Minimig Board v1.0 mcu firmware

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()