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PC87310 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87310
Description  PC87310 (SuperI/OTM) Dual UART with Floppy Disk Controller and Parallel Port
PDF  52 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87310 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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10 Block Diagram (Continued)
13 BLOCK DIAGRAM OF THE PARALLEL PORT
TLC10591 – 5
14 IO ADDRESS DECODE
TABLE 1-1
Address Range
Function
278H – 27FH
Parallel Port 3
378H – 37FH
Parallel Port 2
3BCH – 3BEH
Parallel Port 1
3F8H – 3FFH
Serial Port 1
2F8H – 2FFH
Serial Port 2
320H – 324H (XT)
HCS0 Active
Hard Disk Select
1F0H – 1F7H 3F6H 7 (AT)
HCS0 HCS1 Active
3F2H 4 5 7
Floppy Disk
201
Game Port Select
3F3H
Configuration Port
READ D7 from FDC D0–D6 from HDD WRITE D0–D7 to FDC
Write only register that requires two consecutive writes to change the data
6



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