|
PC/X Adapter Dip Switch Configuration PC/X Adapter Dip Switch Configuration PC/X Adapter Dip Switch Configuration
PC/4 & PC/8
Non-Intelligent Asynchronous
Serial Communication Boards
Setting the I/O Port Addresses
Breakdown of DIP Switch DS1
Status register is set by switches 1-7.
DS1 Switch 1 2 3 4 5 6 7 8 9 10 Switches 8 & 9 should always be on.
I/O Port on: x - x - x x x x x x Switch 10 enables (on) disables (off)
off: - x - x - - - - - - Status register. Pick non-used I/O address.
Breakdown of DIP Switches DS2-DS9
Port I/O address is set by switches 1-7.
DS1 Switch 1 2 3 4 5 6 7 8 Switch 8 enables (on) disables (off)
I/O Port on: x - x x x x x x I/O port. Pick non-used I/O addresses.
off: - x - - - - - - Cable P1 set by DS2, P2 set by DS3, etc.
DIP Switch Settings for I/O Port Addresses
----------------------------------------------------------------------------
I/O on: x - x x x x x x I/O on: - x x x x x x x I/O on: - - x x x x x x
100h off: - x - - - - - - 200h off: x - - - - - - - 300h off: x x - - - - - -
I/O on: x - x x x x - x I/O on: - x x x x x - x I/O on: - - x x x x - x
108h off: - x - - - - x - 208h off: x - - - - - x - 308h off: x x - - - - x -
I/O on: x - x x x - x x I/O on: - x x x x - x x I/O on: - - x x x - x x
110h off: - x - - - x - - 210h off: x - - - - x - - 310h off: x x - - - x - -
I/O on: x - x x x - - x I/O on: - x x x x - - x I/O on: - - x x x - - x
118h off: - x - - - x x - 218h off: x - - - - x x - 318h off: x x - - - x x -
I/O on: x - x x - x x x I/O on: - x x x - x x x I/O on: - - x x - x x x
120h off: - x - - x - - - 220h off: x - - - x - - - 320h off: x x - - x - - -
I/O on: x - x x - x - x I/O on: - x x x - x - x I/O on: - - x x - x - x
128h off: - x - - x - x - 228h off: x - - - x - x - 328h off: x x - - x - x -
I/O on: x - x x - - x x I/O on: - x x x - - x x I/O on: - - x x - - x x
130h off: - x - - x x - - 230h off: x - - - x x - - 330h off: x x - - x x - -
I/O on: x - x x - - - x I/O on: - x x x - - - x I/O on: - - x x - - - x
138h off: - x - - x x x - 238h off: x - - - x x x - 338h off: x x - - x x x -
I/O on: x - x - x x x x I/O on: - x x - x x x x I/O on: - - x - x x x x
140h off: - x - x - - - - 240h off: x - - x - - - - 340h off: x x - x - - - -
I/O on: x - x - x x - x I/O on: - x x - x x - x I/O on: - - x - x x - x
148h off: - x - x - - x - 248h off: x - - x - - x - 348h off: x x - x - - x -
I/O on: x - x - x - x x I/O on: - x x - x - x x I/O on: - - x - x - x x
150h off: - x - x - x - - 250h off: x - - x - x - - 350h off: x x - x - x - -
I/O on: x - x - x - - x I/O on: - x x - x - - x I/O on: - - x - x - - x
158h off: - x - x - x x - 258h off: x - - x - x x - 358h off: x x - x - x x -
I/O on: x - x - - x x x I/O on: - x x - - x x x I/O on: - - x - - x x x
160h off: - x - x x - - - 260h off: x - - x x - - - 360h off: x x - x x - - -
I/O on: x - x - - x - x I/O on: - x x - - x - x I/O on: - - x - - x - x
168h off: - x - x x - x - 268h off: x - - x x - x - 368h off: x x - x x - x -
I/O on: x - x - - - x x I/O on: - x x - - - x x I/O on: - - x - - - x x
170h off: - x - x x x - - 270h off: x - - x x x - - 370h off: x x - x x x - -
I/O on: x - x - - - - x I/O on: - x x - - - - x I/O on: - - x - - - - x
178h off: - x - x x x x - 278h off: x - - x x x x - 378h off: x x - x x x x -
I/O on: x - - x x x x x I/O on: - x - x x x x x I/O on: - - - x x x x x
180h off: - x x - - - - - 280h off: x - x - - - - - 380h off: x x x - - - - -
I/O on: x - - x x x - x I/O on: - x - x x x - x I/O on: - - - x x x - x
188h off: - x x - - - x - 288h off: x - x - - - x - 388h off: x x x - - - x -
I/O on: x - - x x - x x I/O on: - x - x x - x x I/O on: - - - x x - x x
190h off: - x x - - x - - 290h off: x - x - - x - - 390h off: x x x - - x - -
I/O on: x - - x x - - x I/O on: - x - x x - - x I/O on: - - - x x - - x
198h off: - x x - - x x - 298h off: x - x - - x x - 398h off: x x x - - x x -
I/O on: x - - x - x x x I/O on: - x - x - x x x I/O on: - - - x - x x x
1A0h off: - x x - x - - - 2A0h off: x - x - x - - - 3A0h off: x x x - x - - -
I/O on: x - - x - x - x I/O on: - x - x - x - x I/O on: - - - x - x - x
1A8h off: - x x - x - x - 2A8h off: x - x - x - x - 3A8h off: x x x - x - x -
I/O on: x - - x - - x x I/O on: - x - x - - x x I/O on: - - - x - - x x
1B0h off: - x x - x x - - 2B0h off: x - x - x x - - 3B0h off: x x x - x x - -
I/O on: x - - x - - - x I/O on: - x - x - - - x I/O on: - - - x - - - x
1B8h off: - x x - x x x - 2B8h off: x - x - x x x - 3B8h off: x x x - x x x -
I/O on: x - - - x x x x I/O on: - x - - x x x x I/O on: - - - - x x x x
1C0h off: - x x x - - - - 2C0h off: x - x x - - - - 3C0h off: x x x x - - - -
I/O on: x - - - x x - x I/O on: - x - - x x - x I/O on: - - - - x x - x
1C8h off: - x x x - - x - 2C8h off: x - x x - - x - 3C8h off: x x x x - - x -
I/O on: x - - - x - x x I/O on: - x - - x - x x I/O on: - - - - x - x x
1D0h off: - x x x - x - - 2D0h off: x - x x - x - - 3D0h off: x x x x - x - -
I/O on: x - - - x - - x I/O on: - x - - x - - x I/O on: - - - - x - - x
1D8h off: - x x x - x x - 2D8h off: x - x x - x x - 3D8h off: x x x x - x x -
I/O on: x - - - - x x x I/O on: - x - - - x x x I/O on: - - - - - x x x
1E0h off: - x x x x - - - 2E0h off: x - x x x - - - 3E0h off: x x x x x - - -
I/O on: x - - - - x - x I/O on: - x - - - x - x I/O on: - - - - - x - x
1E8h off: - x x x x - x - 2E8h off: x - x x x - x - 3E8h off: x x x x x - x -
I/O on: x - - - - - x x I/O on: - x - - - - x x I/O on: - - - - - - x x
1F0h off: - x x x x x - - 2F0h off: x - x x x x - - 3F0h off: x x x x x x - -
I/O on: x - - - - - - x I/O on: - x - - - - - x I/O on: - - - - - - - x
1F8h off: - x x x x x x - 2F8h off: x - x x x x x - 3F8h off: x x x x x x x -
--------------------------------------------------------
IRQ Selection for PC/4 & PC/8 Boards.
IRQ J85-J90 J1-J10
2 | | | | | |x| | | | | | | | | | | | * Used by EGA(maybe VGA) adapters
| | | | | |x| |x|x|x|x|x|x|x|x|x|x| * Cascade interrupt used by other
| |x|x|x|x|x|x|x|x|x|x| brds to access higher IRQs 10-15
J90
3 |x| | | | | | |x|x|x|x|x|x|x|x| | | * Standard COM 2 & COM 4
|x| | | | | | |x|x|x|x|x|x|x|x|x|x|
| | | | | | | | | |x|x|
J85
4 | | | | |x| | | | | | | | | | | | | * Standard COM 1 & COM 3
| | | | |x| | |x|x|x|x|x|x|x|x|x|x|
| |x|x|x|x|x|x|x|x|x|x|
J89
5 | |x| | | | | |x|x|x|x|x|x|x|x| | | * LPT 2 (2nd parallel port)
| |x| | | | | |x|x|x|x|x|x|x|x|x|x| * Ethernet boards
| | | | | | | | | |x|x|
J86
6 | | | |x| | | | | | | | | | | | | | * Floppy disk controller
| | | |x| | | |x|x|x|x|x|x|x|x|x|x|
| |x|x|x|x|x|x|x|x|x|x|
J88
7 | | |x| | | | |x|x|x|x|x|x|x|x| | | * LPT 1 (1st parallel port)
| | |x| | | | |x|x|x|x|x|x|x|x|x|x|
| | | | | | | | | |x|x|
J87
3 & |x| | | |x| | | |x| |x|x|x|x|x| | | * Standard COM 2 & COM 4
4 |x| | | |x| | |x|x|x|x|x|x|x|x|x|x| * Standard COM 1 & COM 3
| | |x| |x| | | | | |x|x|
J85 J89
Board Identification
Jumpers J9 and J10 are used by the PC/4 and PC/8 boards' ID number (0-3)
when multiple boards are daisy chained together. Daisy chaining is only
needed if you need to share the same IRQ on multiple boards. Two boards
can be set to different IRQs and would then both be board 0.
Board 0 Board 1 Board 2 Board 3
| | | | |x| |x| | |x|x|
|x|x| |x|x| |x|x| |x|x|
|x|x| |x| | | |x| | | |
| |
J9 J10
Daisy Chain Connectors P2 & P3
When multiple boards are daisy chained together, a daisy chain cable links
the boards so they can use the same IRQ. But for a single board in the system
both P2 & P3 should have a jumper on the middle to pins. Daisy chaining will
be covered in a separate document.
P2 . x x . P3 . x x .
|
