Corporation Computer Hardware User Manual

Prometheus-LC CPU User Manual V1.0 Page 12
4.7 Floppy Drive – J7
Ground 1 2 High Density
Ground 3 4 Unused
Ground 5 6 Unused
Ground 7 8 Index
Ground 9 10 Motor Enable
Ground 11 12 Drive Select B
Ground 13 14 Drive Select A
Ground 15 16 Motor Enable
Ground 17 18 Direction
Ground 19 20 Step
Ground 21 22 Write Data
Ground 23 24 Write Enable
Ground 25 26 Track 0
Ground 27 28 Write Protect
Ground 29 30 Read Data
Ground 31 32 Select Protect
Ground 33 34 Disk Change
J7 is a 2x17 pin header. It mates with Diamond Systems’ cable no. 698008 or any standard floppy
drive interface cable. Up to two floppy drives can be connected. The connector furthest away from
the others is used to connect to the board. The connector at the far end of the cable (after the
twist) is for Drive A, and the middle connector is for Drive B.
4.8 IDE Drive – J8
RESET- 1 2 Ground
D7 3 4 D8
D6 5 6 D9
D5 7 8 D10
D4 9 10 D11
D3 11 12 D12
D2 13 14 D13
D1 15 16 D14
D0 17 18 D15
Ground 19 20 Key (Not Used)
DRQ 21 22 Ground
IDEIOW- 23 24 Ground
IDEIOR- 25 26 Ground
IORDY 27 28 Ground
DACK- 29 30 Ground
IRQ14 31 32 Pulled low for 16-bit operation
A1 33 34 Not Used
A0 35 36 A2
CS0- 37 38 CS1-
LED- 39 40 Ground
+5V 41 42 +5V
Ground 43 44 Not Used
J8 is a 2x22 (44-pin) 2mm-pitch pin header. It mates with Diamond Systems’ cable no. 698004,
and may be used to connect up to 2 IDE drives (hard disks, CD-ROMs, or flashdisk modules).
The 44-pin connector includes power and mates directly with notebook drives and flashdisk
modules. To use a standard format hard disk or CD-ROM drive with a 40-pin connector, an
adapter PCB such as Diamond Systems’ ACC-IDEEXT is required.