Manual 104-QUAD-8
11
Chapter 4: Address Selection
The card occupies 32 bytes of I/O space. The card base address can be selected anywhere within the
I/O address range 100-3E0 hex. If in doubt of where to assign the base address, refer to the table below
and the FINDBASE program.
HEX RANGE
USAGE
000-00F
020-021
040-043
060-06F
070-07F
080-09F
0A0-0BF
0C0-0DF
0F0-0F1
0F8-0FF
170-177
1F0-1F8
200-207
238-23B
23C-23F
278-27F
2B0-2BF
2C0-2CF
2D0-2DF
2E0-2E7
2E8-2EF
2F8-2FF
300-30F
310-31F
320-32F
370-377
378-37F
380-38F
3A0-3AF
3B0-3BB
3BC-3BF
3C0-3CF
3D0-3DF
3E8-3EF
3F0-3F7
3F8-3FF
8237 DMA Controller 1
8259 Interrupt
8253 Timer
8042 Keyboard Controller
CMOS RAM, NMI Mask Reg, RT Clock
DMA Page Register
8259 Slave Interrupt Controller
8237 DMA Controller 2
Math Coprocessor
Math Coprocessor
Fixed Disk Controller 2
Fixed Disk Controller 1
Game Port
Bus Mouse
Alt. Bus Mouse
Parallel Printer
EGA
EGA
EGA
GPIB (AT)
Serial Port
Serial Port
Hard Disk (XT)
Floppy Controller 2
Parallel Printer
SDLC
SDLC
MDA
Parallel Printer
VGA EGA
CGA
Serial Port
Floppy Controller 1
Serial Port
Table 4-1:
Hex Ranges
