cpi(4) - NetBSD Manual Pages

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CPI(4)              NetBSD/mac68k Kernel Interfaces Manual              CPI(4)


NAME

     cpi -- parallel printer driver for Creative Systems Inc. Hurdler CPI
     Nubus card


SYNOPSIS

     cpi* at nubus? flags 0x1


DESCRIPTION

     The cpi interface provides access to parallel printer ports.


CONFIGURATION

     The cpi driver supports the following flags for use in config(1) files:

     bit 0:       use the CIO counters 1 and 2 as a 32 bit timecounter(9).


HARDWARE

     The cpi interface supports the Creative Systems Inc. Hurdler CPI Nubus
     card, which is based on a Zilog Z8536 CIO.

     The parallel port on the Hurdler CPI card is wired as follows:

     Signal                 SubD pin   Z8536 pin   Z8536 signal
     /STROBE   Strobe       1          22          PC3
     D0                     2          33          PA0
     D1                     3          32          PA1
     D2                     4          31          PA2
     D3                     5          30          PA3
     D4                     6          29          PA4
     D5                     7          28          PA5
     D6                     8          27          PA6
     D7                     9          26          PA7
     /ACK                   10         21 + 11     PC2 + PB3
     BUSY                   11         19 + 14     PC0 + PB6
     PE        Paper Error  12         20          PC1
     SEL       Select       13         13          PB5
     /AUTOFD   Auto Feed    14         12          PB4
     /FAULT                 15         9           PB1
     /RESET                 16         8           PB0
     /SELIN    Select In    17         10          PB2

     The Z8536 INT line (pin 24) is wired to PB7 (pin 15).


SEE ALSO

     autoconf(4), lpt(4), nubus(4), printcap(5), timecounter(9)

     IEEE Standard 1284-1994


HISTORY

     cpi first appeared in NetBSD 5.0.


AUTHORS

     The cpi driver was written by Hauke Fath <hauke@NetBSD.org>.


CAVEATS

     The Hurdler CPI Nubus card does not use a TTL buffer to drive the paral-
     lel interface.  Instead, the card's Z8536 CIO drives the printer port
     directly.  Printers terminating the parallel interface with less than 2
     kOhms may cause permanent damage to the Z8536 CIO.

NetBSD 7.1.1                     May 18, 2008                     NetBSD 7.1.1