Specifications
EPSON PowerSpan
DMA Channels
DMA channels
Channel
0
1 Function
1 Option card
System Interrupts
System
intmupts
IRQ
NMI
0
1
2
3
4
5
6
7
8
9
IO
11
12
13
14
15
Device
Parity error
Reserved, interval timer
Reserved, keyboard buffer full
Reserved, cascade interrupt from slave PIC
Onboard
serial pod 2
(COM2),
if enabled
Onboard
serial pod 1 (COMI), if enabled
LPT2, if enabled
Onboard diskette drive controller, if enabled
LPTI,
if enabled
Real-time clock (RTC)
User definable; can be set for EISA option cards using the ECU
COM3, if enabled; can be set for EISA option cards using the ECU
COM4, if enabled; can be set for EISA option cards using the ECU
SCSI controller, if enabled; can be set for EISA option cards using the
ECU
Onboard
PS12
mouse pod, if enabled
Reserved, math coprocessor
IDE hard drive controller, if enabled
User definable; can be set for the following (up to three choices)
using the ECU:
EISA option cards
IDE hard disk drive controller
Built-in video controller; programmable to 9, 10, II, or 15
Built-in SCSI controller; programmable to 9, 10, II, or 15
Input/output Addresses
Input/output addresses
l/O
address
000
-
00F
020
-
021
026
027
040
-
043
048
-
048
060,064
061
070
070
071
078
080
081
-
08F
Device
Slave DMA controller 1
Master interrupt controller 1
Configuration controller index registers
Configuration controller data registers
Interval timer 1
Interval timer 2
Keyboard/mouse controller
NMI and diagnostic pod
Real-time clock
Enable NMI
Real-time clock
BIOS loop timer
Power-on diagnostic error codes
DMA register
page
Input/output addresses (continued)
l/O
address Device
OAO
-
OAI Slave interrupt controller 2
OCO
-
ODE
Master DMA controller 2
Reset numeric coprocessor
Clock calendar
Numeric coprocessor
IDE hard drive controller
Parallel pod 2 (LPT2); parallel port 3 (PS/2-compatible)
OF0
OF8
-
OFF
IFO-
IF8
278
-
278
1 2C0
-
2DF
2E8
-
2EF
2F8
-
2FF
378
-
37F
380
-
388
3BC
-
3BE
3BF
-
3DF
3E8
-
3EF
3F0
-
3F5
3F6
3F7
3F7
3F8
-
3FF
400
-
408
40C
-
40F
461
-
464
464
-
465
480
-
48F
4C2
-
4CE
4D0
4Dl
4D4
4D4
co2
-
co4
C80
-
C83
Serial port 4 (COM4)
Serial port 2 (COM2)
Parallel pod 1 (LPTI); parallel port 2
(PS/2-compatible)
WD9OC31
onboard
video registers
Parallel pod 3
(LPTB);
parallel port 1
(PS/2-compatible)
16C552 registers
Serial port 3 (COM3)
Onboard diskette controller
Onboard
IDE hard drive controller
Onboard
IDE read
Onboard diskette controller read/write
Serial port 1
(COMI)
Extended DMA controller 1 registers
Extended control/test registers
Extended NMI register
Extended bus master
Extended DMA page register
Extended DMA 2 registers
Extended interrupt 1
Extended interrupt 2
Extended DMA 2 chaining
Extended DMA 2 write mode
System baseboard configuration information
Svstem
baseboard EISA ID
resister
C84
C85
-
C87
9nnn
-
9FFF
System baseboard enable
Reserved
Built-in SCSI controller
System Memory Map
Starting
address
IKB
512KB
540KB
768KB
300KB
332KB
896KB
928KB
936KB
944KB
iex
address
.ange
IOOOOh
to
17FFFh
30000h to
3FFFFh
IAOOOOh
to
IBFFFFh
ICOOOOh
to
lC7FFFh
lC8000h to
3FFFFh
IDOOOOh
to
JFFFFh
OEOOOOh
to
OE7FFFh
OE8000h
to
E9FFFh
OEAOOOh
to
OEBFFFh
OECOOOh
to
OEFFFFh
Size
512KB
128KB
128KB
32KB
32KB
54KB
32KB
16KB
Function
3ase memory
3ase memory enabled in
SETUP or the EISA
Zonfiguration
utility
dideo
display RAM
Dffboard
video BIOS (can be
shadowed) or built-in SCSI
310s (can be shadowed)
Adapter BIOS extensions (can
oe
shadowed)
Adapter BIOS extensions
Built-in video BIOS (can be
shadowed or mapped to
OCOOOOh)
EISA Configuration utility data
Reserved memory
Recovery BIOS
EPSON PowerSpan-6
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