7. CPU Board Resources
SCP-8550-LLV
43
DMA Channels
Table 7.3. DMA Channels
DMA
Data Width
System Resources
0
8 or 16bits
Audio
1
8 or 16bits
Audio / parallel port
2
8 or 16bits
Diskette drive
3
8 or 16bits
Parallel port (for ECP) /audio
4
--
Reserved - cascade channel
5
16bits
Open
6
16bits
Open
7
16bits
Open
Interrupters
Table 7.4. Interrupters
IRQ #
System Resources
NMI
I/O Channel check
0
Reserved, interval timer
1
Reserved, keyboard controller
2
Reserved, cascade interrupt from slave PIC
3
COM2*
4
COM1*
5
LPT2 (Plug and Play option) /audio/user available
6
Diskette drive controller
7
LPT1*
8
Real time clock
9
User available
10
USB/User available
11
Windows Sound System/User available
12
PS/2 mouse port (if present, else user available)
13
Reserved, math coprocessor
14
Primary IDE (if present, else user available)
15
Secondary IDE (if present, else user available)
* Default, but can be changed to another IRQ
Summary of Contents for SCP-8550-LLV
Page 7: ...vi SCP 8550 LLV...
Page 37: ...5 Jumper setting 30 SCP 8550 LLV...
Page 47: ...6 RAS Functions 40 SCP 8550 LLV...
