Epson EQUITY II+ Product Manual - Page 3
Browse online or download pdf Product Manual for Desktop Epson EQUITY II+. Epson EQUITY II+ 12 pages. 12 mhz
Also for Epson EQUITY II+: Product Support Bulletin (19 pages), Product Support Bulletin (45 pages), Product Support Bulletin (21 pages)
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Multifunction Board
Multifunction Board
Jumper
2
3
4
5
6
-
A
B
A
A
A
B
B A
B B
AA
A
A
B-
I/O Port Addresses
Address
DMA Controller 1
020 - 03F
Interrupt Controller 1
040 - 05F
Timer/Counter
060 - 06F
Keyboard controller and Port B
070 -07F
CMOS RAM and Non - Maskable Interrupt Mask
OAO - OBF
Interrupt Controller 2
OCO -0DF DMA Controller 2
Hard Disk Controller
278 - 27F
Parallel Port 1
378 - 37F
Parallel Port 0
3B0 -3BF
Parallel Port 2 (on some video boards)
3F0 - 3F7
Floppy Disk Controller
Equity Series Computers
9
* Primary register set of FDC
Secondary register set of FDC
* Enable FDC register set
Disable FDC register set
A
B
Secondary paralle,l I/F, IRQ5
Video adapter parallel I/F. IRQ7
A
Disable parallel I/F
B
Secondary serial I/F, IRQ3
Disable serial I/F
Function
1 2 / 1 2 / 8 8
DMA Channels
Channel
Function
Hardware Interrupts
EQUITY II+ (12 MHz)
Function
Spare
Spare
Floppy disk transfers
Spare (Hard disk drive)
Cascade of data from channel 0 -3
Spare
Spare
Spare
FUNCTION
Timer Output 0
Keyboard
Interrupt from CTLRP
Serial port 2
Serial port 1
Parallel port 2
Floppy disk interrupt
Parallel port 1
RTC interrupt
Software redirected to IRQ2
Reserved
Reserved
Reserved
Coprocessor
Hard disk controller
Reserved
E Q l l + - 3