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
lpt(4), mac68k/autoconf(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 parallel 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.