Minimig Harddisc

P-ATA

ivier 070801:

Gayle style IDE is very simple, i've been looking into it. though bluea would probably be the best person to ask about it, he has it working on natami i believe. Most of the signals come straight from the CPU, which means very few FPGA pins will be needed.

from what i can see, the only lines that dont come straight from the CPU are.

IDE_CS1

IDE_CS2 (usually only used by IDE doublers, can probably be left out)

IDE_IRQ (not needed when interfacing drives to MCU's, not sure whether scsi.device needs it)

IOWR

IORD

WAIT

what do you know... exactly 6 extra lines

The data lines are byte swapped

And IDE_A0 - IDE_A2 are mapped to A2 - A4

finally, IDE_LED, optionally goes to an LED.

an IDE only mode compact flash port, could easily be added to the bottom side of the board. :Giving us access to 1.8" hard drives.

See also

• Minimig Expansion