Lines Matching +full:pin +full:- +full:dependent

1 .\" -*- nroff -*-
3 .\" Copyright (c) 1996 A.R.Gordon, andrew.gordon@net-tel.co.uk
51 point-to-point network interface between two similarly configured systems.
54 and any standard AT-compatible printer port with working interrupts may be used.
73 .Bl -tag -width Fl
91 .Bd -literal
92 	Pin	Pin	Description
93 	2	15	Data0 -> ERROR*
94 	3	13	Data1 -> SLCT
95 	4	12	Data2 -> PE
96 	5	10	Data3 -> ACK*
97 	6	11	Data4 -> BUSY
98 	15	2	ERROR* -> Data0
99 	13	3	SLCT   -> Data1
100 	12	4	PE     -> Data2
101 	10	5	ACK*   -> Data3
102 	11	6	BUSY   -> Data4
103 	18-25	18-25	Ground
115 .Bl -tag -width dataxxxx(Pinxx)
116 .It Em Data0 (Pin 2)
118 .It Em Data1 (Pin 3)
120 .It Em Data2 (Pin 4)
122 .It Em Data3 (Pin 5)
124 .It Em Data4 (Pin 6)
126 .It Em ERROR* (pin 15)
128 .It Em SLCT (pin 13)
130 .It Em PE (pin 12)
132 .It Em BUSY (pin 11)
134 .It Em ACK* (pin 10)
145 The packet format has a two-byte header, comprising the fixed values 0x08,
151 the data lines (i.e., writing the ones-complement of the previous nibble
154 Note that the end-of-packet marker assumes that the handshake signal and
155 the data-out bits can be written in a single instruction - otherwise
157 as end-of-packet.
162 .Bl -tag -width dataxxxx(Pinxx)
163 .It Em Data0 (Pin 2)
165 .It Em Data1 (Pin 3)
167 .It Em Data2 (Pin 4)
169 .It Em Data3 (Pin 5)
171 .It Em Data4 (Pin 6)
173 .It Em ERROR* (pin 15)
175 .It Em SLCT (pin 13)
177 .It Em PE (pin 12)
179 .It Em ACK* (pin 10)
181 .It Em BUSY (pin 11)
194 .Bd -literal
214 for handshake-in cannot be used to generate an interrupt.
228 Busy-waiting loops are used while handshaking bytes, (and worse still when
238 timers, and so are dependent on CPU speed.