IBM 4840-563 System Reference - Page 42
DMA Assignments, Special SurePOS 500-XX3 POS Devices Interfaces
View all IBM 4840-563 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 42 highlights
DMA Assignments DMA 0 1 2 3 4 5 6 7 DATA WIDTH 8 bits only 8 bits only 8 bits only 8 bits only 16 bits only 16 bits only 16 bits only 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 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 23-16 15-8 7-0 Device ID (02A2h) Vendor ID (1014h) Status Register Command Register Reserved (00h) Class Code (088000h) Revision (01h) ID Header Type (80h) Latency Timer Cache Line Size (00h) (00h) RW Control Registers (16 Bytes of I/O Space) EEPROM (128 Bytes of Memory Space) Reserved (00000000h) Reserved (00000000h) Reserved (00000000h) Reserved (00000000h) Reserved (00000000h) PCI Subsystem Vendor/Subsystem ID (loaded from Config EEPROM) Reserved (00000000h) Reserved (00000000h) Reserved (00000000h) Reserved (00h) Reserved (00h) Interrupt Pin Use INTA# (01h) Interrupt Line Reserved (00h) Reserved (00h) Interrupt Status Register A Reserved (00h) Note: The interrupt in Function 0 is meant for Presence Sensor logic. SurePOS 500 Model XX3 Technical Reference, v 1.3 81 Address 00h 04h 08h 0Ch 10h 14h 18h 1Ch 20h 24h 28h 2Ch 30h 34h 38h 3Ch 40h Page 42 of