Chapter 1
Introduction
page 1 - 16
Excalibur Systems
The Interrupt Pin register identifies which PCI interrupt, if any, is connected to
the controller's PCI interrupt pins. The allowable values are 0 (no interrupts) or
1 (INTA#). The default power-up value assumes INTA#.
The Minimum Grant register is not implemented on the
DAS-429PCI/Mx
.
The Maximum Latency register is not implemented on the
DAS-429PCI/Mx
.
1.5.14
Interrupt Pin Register (INTPIN)
Address:
3D (H)
Power-up value:
01 H
Boot-load:
External nvRAM offset 7D H
Attribute:
Read only
Size:
8 bits
Bit
Bit Name
Description
03-07
Reserved
All zeros (RO)
00-02
Pin Number
Bit 02
Bit 01
Bit 00
Description
0
0
0
0
0
1
None
INTA#
Interrupt Pin Register
1.5.15
Minimum Grant Register (MINGNT)
Address:
3E (H)
Power-up value:
00 H
Boot-load:
External nvRAM offset 7E H
Attribute:
Read only
Size:
8 bits
Bit
Description
00–07
Don’t Care
Maximum Grant Register
1.5.16
Maximum Latency Register (MAXLAT)
Address:
3F (H)
Power-up value:
00 H
Boot-load:
External nvRAM offset 7F H
Attribute
Read only
Size:
8 bits
Bit
Description
00–07
Don’t Care
Maximum Latency Register
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