TANDY/RADIO SHACK
CDR-1000 INTERFACE BOARD
|
Card Type |
CD-ROM Interface card |
|
Chip Set |
Unidentified |
|
I/O Options |
CD-ROM interface, audio in - CD-ROM, line out (2) |
|
Data Bus |
8-bit ISA |
|
Card Size |
Half-length, full-height |
|
CONNECTIONS |
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|
Function |
Label |
Function |
Label |
|
CD-ROM interface |
CN1 |
Line out - Left |
CN3 |
|
Audio in - CD-ROM |
CN2 |
Line out - Right |
CN4 |
|
DMA CHANNEL SELECTION |
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|
Channel |
JP1 |
|
|
1 |
Pins 1 & 2, 3 & 4 closed |
|
| » |
3 |
Pins 5 & 6, 7 & 8 closed |
|
INTERRUPT SELECTION |
||
|
IRQ |
JP2 |
|
|
IRQ2 |
Pins 1 & 2 closed |
|
| » |
IRQ3 |
Pins 3 & 4 closed |
|
IRQ5 |
Pins 5 & 6 closed |
|
|
BASE I/O ADDRESS SELECTION |
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|
Setting |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 |
SW1/7 |
SW1/8 |
|
000h |
On |
On |
On |
On |
On |
On |
On |
On |
|
004h |
On |
On |
On |
On |
On |
On |
On |
Off |
|
00Ch |
On |
On |
On |
On |
On |
On |
Off |
Off |
|
01Ch |
On |
On |
On |
On |
On |
Off |
Off |
Off |
|
03Ch |
On |
On |
On |
On |
Off |
Off |
Off |
Off |
|
3C0h |
Off |
Off |
Off |
Off |
On |
On |
On |
On |
|
3E0h |
Off |
Off |
Off |
Off |
Off |
On |
On |
On |
|
3F0h |
Off |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
3F8h |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
On |
|
3FCh |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
Note: A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Least Significant Bit and switch SW1/1 is the Most Significant Bit. The switches have the following decimal values: SW1/8=4, SW1/7=8, SW1/6=16, SW1/5=32, SW1/4=64, SW1/3=128, SW1/2=256, SW1/1=512. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0) |
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