Product information guide
EQUITY III + (10 MHz)
Memory Board
I/O Port Addresses
Jumper
1234567
Function
A A A
B A A
B B A
B B B
A A
B B
A A
B B
* Factory Settings
* RAM 640KB
RAM 512KB
RAM 256KB
FIAM
OKB
EPROM 21728 type
* EPROM 27256 type
* Select ROM sockets
24A and 248
Select ROM sockets
23A and 23B
Multifunction Board
Address
Function
300-OlF
DMA Controller 1
D20
-
03F
Interrupt Controller 1
040
-
05F
Timer/Counter
D6O-06F
Keyboard controller and Port B
Di’O-07F CMOS RAM and Non
-
Maskable Interrupt Mask
WO-09F
DMA Page Register
OAO-OBF Interrupt Controller 2
DC0
-0DF
DMA Controller 2
OE0
-OFF Numeric Coprocessor
lFO-lF7
Hard Disk Controller
-
Primary
278
-
27F
Parallel Port 1
2F8
-
2FF
Serial Port 1
378
-
37F
Parallel Port 0
3BC-3BF
Parallel Port 2 (on some video boards)
3F0 -3F7
Floppy Disk Controller
3F8-3FF
Serial Port 0
lumper
Function
2 3 4 5 6 7 8 9 10
\ A * Primary register set (AT FDC)
3 A
Secondary register set (AT FDC)
\
B
PC register set (FDC)
3 B
Disable FDC register set
A A
A
* Primary parallel I/F,
IRQ7
A B
B
Secondary parallel I/F,
IRQ5
B A
A
Video adapter parallel I/F,
IRQ7
B B
-
Disable parallel I/F
A A
A
* Primary serial I/F,
IRQ4
A B
B
Secondary serial I/F,
IRQ3
B
-
-
Disable serial I/F
A
* AT compatible FDD I/F
B
Equity Ill FDD I/F
A
* Standard setting
B
Test mode of VCO
* Factory Settings
Equity Series Computers
12/12/88
!
-I
Keylock
The keylock on the front panel allows you to disable the
keyboard and RESET button and lock the top cover of the
main unit for security. The keyboard may be locked while
the system is in operation.
This disables the keyboard so no
one can interfere with the current operation.
To lock the system, insert the key with the notch pointing
left and turn it clockwise. You must press it in slightly when
you turn the key. To unlock it, insert the key with the notch
pointing up and turn the key counterclockwise. You can
remove the key in either position.
EQIII + - 7