W83627F Information Storage Devices, Inc, W83627F Datasheet - Page 87

• Manufacturer Part Number: W83627F
• Description: LPC Interface I/o Plus Kbc, Game Port, Midi Port
• Manufacturer: Information Storage Devices, Inc

4.3 Logical Device 1 (Parallel Port)
CR30 (Default 0x01 if PNPCVS = 0 during POR, default 0x00 otherwise)
CR60, CR 61 (Default 0x03, 0x78 if PNPCVS = 0 during POR, default 0x00, 0x00 otherwise )
CR70 (Default 0x07 if PNPCVS = 0 during POR, default 0x00 otherwise)
CR74 (Default 0x04)
CRF0 (Default 0x3F)
These two registers select Parallel Port I/O base address.
[0x100:0xFFC] on 4 byte boundary (EPP not supported) or
[0x100:0xFF8] on 8 byte boundary(all modes supported, EPP is only available when the base
address is on 8 byte boundary).
Bit 7 - 1 : Reserved.
Bit 0
Bit 7 - 4 : Reserved.
Bit [3:0] : These bits select IRQ resource for Parallel Port.
Bit 7 - 3 : Reserved.
Bit 2 - 0 : These bits select DRQ resource for Parallel Port.
Bit 7
Bit 6 - 3 : ECP FIFO Threshold.
Bit 2 - 0 : Parallel Port Mode (CR28 PRTMODS2 = 0)
= 1 Activates the logical device.
= 0 Logical device is inactive.
: Reserved.
= 100 Printer Mode (Default)
= 000 Standard and Bi-direction (SPP) mode
= 001 EPP - 1.9 and SPP mode
= 101 EPP - 1.7 and SPP mode
= 010 ECP mode
= 011 ECP and EPP - 1.9 mode
= 111 ECP and EPP - 1.7 mode.
0x00=DMA0
0x01=DMA1
0x02=DMA2
0x03=DMA3
0x04 - 0x07= No DMA active
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Publication Release Date:November 2002
W83627HF/F
Revision 2.0