27 Aug
2001
27 Aug
'01
5:47 p.m.
Tony Duell wrote:
That's actually a standard multi-function I/O card. The DA15 is a
joystick port, the DB25 is the second printer port. The card also
contains 2 serial ports (COM3: and COM4: and a floppy controller. The
latter I hacked to be at the secondary address and to work with HD (and
8") drives.
Ok, I was thinking it was the high density 15 pin connector that VGA
normally uses. I would have recognized it as a Game/midi connector in
person.
Not really, but very unusual :
(a) (male DC37) is the control cable for ST506 hard drives (the card in
slot 2 is an ST506 controller)
(b,c) (female DB25) are the data cables for those hard drives. I have an
external box containing the hard drives and the 3.5" floppies -- the
machine is _packed_ inside.
These aren't normally external drives are they?
I'm glad you're not setting this thing up, or I'd have some TTL to
replace!. The DE9 is an MDA monitor port, the DB25 is the first printer
port. It's a normal IBM mono/parallel card.
See, I get confused with that second letter. What makes it a DE9, and
not a DB9?
Yes. Normal IBM floppy controller. The external 3.5" drives plug in here.
No, a serial port (it's male). COM1: actually.
I guess I get the genders mixed up, because so many computer connectors
are compound connectors. You've got pins sliding in, surrounded by a
shell, that's getting something slid into it, etc. I guess your calling
it by the pins, and I'm calling it by the shell.
Chad Fernandez
Michigan, USA
Unless it's the floopy drives on this PC/XT. It
has _6_. 2 * 5.25" (A:,
B:), 2 * 3.5" (F:, G:) and 2 * 8" (H:, I:, but not directly available
from MS-DOS, only from specially-written programs like PERQdisk). THe
hard drive partitions are C:, D;, E: (just to confuse you more...)
I wondered how many drives you had :-)
Slot 1 : Female DA15, Female DB25
don't know Slot 2 : 6 Ribbon cables come out (a) ending in a male
DC37, (b,c) ending
in female DB25s, (d,e) ending in male DB25s (narrower ribbon cables than
b,c), (f) ending in a female DC37
No idea, but from you, probably something homemade :-)
(d,e) (male DB25) are the COM3: and COM4: serial ports from the card in
slot 1
(f) (female DC37) is the floppy cable from the card in slot 1. It goes to
an adapter box that they has a 50 way ribbon going to the 2 8" drives
The button is a reset function for the card in slot 3(not a complete
machine reset). The miniDIN is an I2C port. This one is a little unfair
in that it's home-made from the Elektor design.
One of them !. This is normal IBM CGA card.
I was thinking either CGA or EGA. Mine was EGA, on a 286.
Slot 3 : Pushbutton switch, Mini-DIN 6
The switch might be a reset, but no idea on the mini-din 6, M$ bus mouse
perhaps?
Slot 4 : RCA phono socket, female DE9
That's your video card I think. Slot 5 : Female DE9, female DB25
serial ports Slot 6 : Female DC37
again, I 'm not sure what a DC connector is.... is it a floppy
controller? I can't recall the pin count. Slot 7 : Male DB25
parallel port?