Dma Assignments; Special Surepos 500-Xx3 Pos Devices Interfaces - IBM 4840-563 System Reference Manual

DMA Assignments

DMA DATA WIDTH
0 8 bits only
1 8 bits only
2 8 bits only
3 8 bits only
4
5 16 bits only
6 16 bits only
7 16 bits only
Note: Channels 0-3 can transfer data in 64KB pages and channels 5-7 can transfer data in 128KB pages.

Special SurePOS 500-XX3 POS Devices Interfaces

ASIC PCI Function 0: POS Interface - special devices
Function 0 of the SurePOS 500-XX3 ASIC contains the interface for several special Point of Sale devices.
The Presence Sensor Interface is explained below. The EEPROM control, UART enable/disable control, and
the other functions are available by request for the ASIC specification from Partnerline. These items are
controllable through Setup and DOS tools, or intended for usage only by the BIOS, thus their interface details
are not included in this document. Below is the PCI Configuration space of function 0, with the Presence
Sensor device details in the next section.
31-24
Device ID (02A2h)
Status Register
Class Code (088000h)
Reserved (00h) Header Type (80h)
RW Control Registers (16 Bytes of I/O Space)
EEPROM (128 Bytes of Memory Space)
PCI Subsystem Vendor/Subsystem ID
Reserved (00h)
Reserved (00h)
Note: The interrupt in Function 0 is meant for Presence Sensor logic.
SurePOS 500 Model XX3 Technical Reference, v 1.3
SYSTEM RESOURCE
User Available for ISA bus
User Available for ISA bus (normally used for LAN)
RESERVED, Floppy
Parallel Port if ECP, otherwise User Available for ISA bus
RESERVED - Cascade Channel
User Available for ISA bus
User Available for ISA bus
User Available for ISA bus
23-16
Latency Timer
(00h)
Reserved (00000000h)
Reserved (00000000h)
Reserved (00000000h)
Reserved (00000000h)
Reserved (00000000h)
(loaded from Config EEPROM)
Reserved (00000000h)
Reserved (00000000h)
Reserved (00000000h)
Interrupt Pin Use
Reserved (00h)
Interrupt Status
Reserved (00h)
Register A
15-8
Vendor ID (1014h)
Command Register
Revision
Cache Line Size
(00h)
Interrupt Line
INTA# (01h)
Reserved (00h)
81
7-0 Address
00h
04h
(01h) 08h
ID
0Ch
10h
14h
18h
1Ch
20h
24h
28h
2Ch
30h
34h
38h
3Ch
40h
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