mkb@rover.ri.cmu.edu (Mike Blackwell) (08/14/87)
I'm not sure of the best place to post this, but I've seen people ask for
one of these on this list, so here it goes. I've designed a simple parallel
to serial converter which allows you to read 8-bit parallel data through a
Mac RS-422 serial port. Actually, the only Mac part of it is the RS-422 line
driver at the end of the line: replace it with a 1488 or a Maxim MAX232
(great chip! only needs +5 volts), and you could plug this in to any serial
port.
Anyway, this is a simple 6 chip circuit, made with parts I had on hand
(which is why it's all CMOS - all the chips have more common non-CMOS equivs
which you can substitute). A dip-switch lets you select baud rates from 75
to 19.2K. A different oscillator would let you run faster. Two modes of
operation: either an external strobe signal causes a byte to be sent, or the
circuit will automatically send data whenever the input changes (both cases
gated with the UART ready).
The rest of this message is a PostScript picture of the circuit you can
print on your favorite PS printer. The file is about 30K - if you don't get
it all, let me know. Also, if you need example MPW C routines to access the
serial port, I can send them to you.
have fun... -m-
Mike Blackwell, The Robotics Institute, Carnegie-Mellon Univ.
ARPA: mkb@rover.ri.cmu.edu
Phone: 412-268-8830
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-102 -2 -102 -18 1 1 1 0 dpL
-130 37 -130 13 1 1 1 0 dpL
-92 23 -92 13 1 1 1 0 dpL
-92 37 -92 27 1 1 1 0 dpL
-134 26 -134 -21 1 1 1 0 dpL
}{
-88 26 -88 -21 1 1 1 0 dpL
-78 26 -88 26 1 1 1 0 dpL
-78 -31 -78 26 1 1 1 0 dpL
-144 -31 -144 26 1 1 1 0 dpL
-144 26 -134 26 1 1 1 0 dpL
255 -15 285 -6 1 1 1 (Page:) dpS
}{
72 36 216 49 2 1 1 (Mobile Robot Lab) dpS
}}def
(STITLEBOX.RIGHT){0 1041 mark{
0 521 0 -520 1 1 1 0 dpL
}}def
(STITLEBOX.LEFT){0 1041 mark{
0 521 0 -520 1 1 1 0 dpL
}}def
(STITLEBOX.TOP){780 0 mark{
390 0 -390 0 1 1 1 0 dpL
}}def
(S$$21:32:56){7 9 mark{
-3 -4 3 5 1 0 1 (Y) dpS
4 1 (3) 1 1 1 dpP
}}def
(S$$21:32:55){8 9 mark{
-2 -4 4 5 1 0 1 (B) dpS
-4 1 (2) 2 1 1 dpP
}}def
(S$$21:32:52){8 9 mark{
-2 -4 4 5 1 0 1 (A) dpS
-4 1 (1) 2 1 1 dpP
}}def
(S74HC08){42 36 mark{
-19 4 17 13 1 1 1 (74HC08) dpS
17 -1 0 1 1 1 (S$$21:32:56) dpI
-17 -13 0 1 1 1 (S$$21:32:55) dpI
-17 11 0 1 1 1 (S$$21:32:52) dpI
-21 -18 -21 18 1 1 1 0 dpL
}{
3 0 18 16200 5400 1 1 1 0 dpC
-21 18 3 18 1 1 1 0 dpL
-21 -18 3 -18 1 1 1 0 dpL
}}def
(S74HC08-2){42 36 mark{
21 0 (6) 1 1 1 dpP
-21 -12 (5) 2 1 1 dpP
-21 12 (4) 2 1 1 dpP
-19 4 17 13 1 1 1 (74HC08) dpS
-21 -18 -21 18 1 1 1 0 dpL
3 0 18 16200 5400 1 1 1 0 dpC
}{
-21 18 3 18 1 1 1 0 dpL
-21 -18 3 -18 1 1 1 0 dpL
}}def
(S74HC123){66 54 mark{
-17 -10 25 -1 1 1 1 (74HC123) dpS
12 -25 18 -16 1 1 1 (R) dpS
-12 -25 -6 -16 1 1 1 (C) dpS
33 9 (4) 1 1 1 dpP
33 -15 (13) 1 1 1 dpP
24 -20 30 -11 1 1 1 (Q) dpS
}{
15 -27 (15) 3 1 1 dpP
-9 -27 (14) 3 1 1 dpP
18 4 30 13 1 1 1 (Q*) dpS
-5 10 13 19 1 1 1 (Clr) dpS
-24 4 -18 13 1 1 1 (B) dpS
-24 -20 -18 -11 1 1 1 (A) dpS
3 27 (3) 2 1 1 dpP
}{
-30 -15 3 0 21600 1 1 1 0 dpC
-27 9 (2) 2 1 1 dpP
-33 -15 (1) 2 1 1 dpP
3 24 3 0 21600 1 1 1 0 dpC
33 -27 -27 -27 1 1 1 0 dpL
-27 21 -27 -27 1 1 1 0 dpL
}{
33 21 -27 21 1 1 1 0 dpL
33 21 33 -27 1 1 1 0 dpL
}}def
(S74HC123-2){66 54 mark{
3 27 (11) 2 1 1 dpP
33 9 (12) 1 1 1 dpP
33 -15 (5) 1 1 1 dpP
15 -27 (7) 3 1 1 dpP
-9 -27 (6) 3 1 1 dpP
-33 -15 (9) 2 1 1 dpP
-27 9 (10) 2 1 1 dpP
}{
-17 -10 25 -1 1 1 1 (74HC123) dpS
12 -25 18 -16 1 1 1 (R) dpS
-12 -25 -6 -16 1 1 1 (C) dpS
24 -20 30 -11 1 1 1 (Q) dpS
18 4 30 13 1 1 1 (Q*) dpS
-5 10 13 19 1 1 1 (Clr) dpS
}{
-24 4 -18 13 1 1 1 (B) dpS
-24 -20 -18 -11 1 1 1 (A) dpS
-30 -15 3 0 21600 1 1 1 0 dpC
3 24 3 0 21600 1 1 1 0 dpC
33 -27 -27 -27 1 1 1 0 dpL
-27 21 -27 -27 1 1 1 0 dpL
}{
33 21 -27 21 1 1 1 0 dpL
33 21 33 -27 1 1 1 0 dpL
}}def
(S$$16:52:08){27 9 mark{
-10 -4 14 5 1 1 1 (TBR1) dpS
-13 2 (26) 2 1 1 dpP
}}def
(S$$16:52:11){27 9 mark{
-10 -4 14 5 1 1 1 (TBR2) dpS
-13 2 (27) 2 1 1 dpP
}}def
(S$$16:52:14){27 9 mark{
-10 -4 14 5 1 1 1 (TBR3) dpS
-13 2 (28) 2 1 1 dpP
}}def
(S$$16:52:17){27 9 mark{
-10 -4 14 5 1 1 1 (TBR4) dpS
-13 2 (29) 2 1 1 dpP
}}def
(S$$16:52:21){27 9 mark{
-10 -4 14 5 1 1 1 (TBR5) dpS
-13 2 (30) 2 1 1 dpP
}}def
(S$$16:52:24){27 9 mark{
-10 -4 14 5 1 1 1 (TBR6) dpS
-13 2 (31) 2 1 1 dpP
}}def
(S$$16:52:27){27 9 mark{
-10 -4 14 5 1 1 1 (TBR7) dpS
-13 2 (32) 2 1 1 dpP
}}def
(S$$16:52:29){27 9 mark{
-10 -4 14 5 1 1 1 (TBR8) dpS
-13 2 (33) 2 1 1 dpP
}}def
(S$$16:52:33){27 9 mark{
-10 -4 14 5 1 1 1 (RBR1) dpS
-13 2 (12) 2 1 1 dpP
}}def
(S$$16:52:35){27 9 mark{
-10 -4 14 5 1 1 1 (RBR2) dpS
-13 2 (11) 2 1 1 dpP
}}def
(S$$16:52:37){27 9 mark{
-10 -4 14 5 1 1 1 (RBR3) dpS
-13 2 (10) 2 1 1 dpP
}}def
(S$$16:52:40){27 9 mark{
-10 -4 14 5 1 1 1 (RBR4) dpS
-13 2 (9) 2 1 1 dpP
}}def
(S$$16:52:43){27 9 mark{
-10 -4 14 5 1 1 1 (RBR5) dpS
-13 2 (8) 2 1 1 dpP
}}def
(S$$16:52:46){27 9 mark{
-10 -4 14 5 1 1 1 (RBR6) dpS
-13 2 (7) 2 1 1 dpP
}}def
(S$$16:52:49){27 9 mark{
-10 -4 14 5 1 1 1 (RBR7) dpS
-13 2 (6) 2 1 1 dpP
}}def
(S$$16:52:51){27 9 mark{
-10 -4 14 5 1 1 1 (RBR8) dpS
-13 2 (5) 2 1 1 dpP
}}def
(S$$17:08:39){27 9 mark{
-13 2 (22) 2 1 1 dpP
-10 -4 14 5 1 1 1 (TBRE) dpS
}}def
(S$$17:08:41){27 9 mark{
-13 2 (23) 2 1 1 dpP
-10 -4 14 5 1 1 1 (TRBL) dpS
}}def
(S$$17:08:44){21 9 mark{
-10 2 (24) 2 1 1 dpP
-7 -4 11 5 1 1 1 (TRE) dpS
}}def
(SHD6402){120 270 mark{
45 12 57 21 1 1 1 (PE) dpS
60 18 (13) 1 1 1 dpP
45 0 57 9 1 1 1 (FE) dpS
60 6 (14) 1 1 1 dpP
45 -12 57 -3 1 1 1 (OE) dpS
60 -6 (15) 1 1 1 dpP
}{
60 135 -60 135 1 1 1 0 dpL
60 -135 -60 -135 1 1 1 0 dpL
-24 27 30 40 2 1 1 (HD6402) dpS
-60 -135 -60 135 1 1 1 0 dpL
60 -135 60 135 1 1 1 0 dpL
-30 123 -18 132 1 1 1 (MR) dpS
}{
-24 135 (21) 2 1 1 dpP
39 108 57 117 1 1 1 (RRD) dpS
60 114 (4) 1 1 1 dpP
39 90 57 99 1 1 1 (DRR) dpS
60 96 (18) 1 1 1 dpP
39 72 57 81 1 1 1 (SFD) dpS
60 78 (16) 1 1 1 dpP
}{
39 54 57 63 1 1 1 (TRC) dpS
60 60 (40) 1 1 1 dpP
39 36 57 45 1 1 1 (RRC) dpS
60 42 (17) 1 1 1 dpP
39 -102 57 -93 1 1 1 (CRL) dpS
60 -96 (34) 1 1 1 dpP
45 -42 57 -33 1 1 1 (PI) dpS
}{
60 -36 (35) 1 1 1 dpP
39 -54 57 -45 1 1 1 (SBS) dpS
60 -48 (36) 1 1 1 dpP
33 -66 57 -57 1 1 1 (CLS2) dpS
60 -60 (37) 1 1 1 dpP
33 -78 57 -69 1 1 1 (CLS1) dpS
60 -72 (38) 1 1 1 dpP
}{
39 -90 57 -81 1 1 1 (EPE) dpS
60 -84 (39) 1 1 1 dpP
-57 -129 -45 -120 1 1 1 (DR) dpS
-60 -123 (19) 2 1 1 dpP
-47 19 0 1 1 1 (S$$16:52:08) dpI
-47 7 0 1 1 1 (S$$16:52:11) dpI
-47 -5 0 1 1 1 (S$$16:52:14) dpI
}{
-47 -17 0 1 1 1 (S$$16:52:17) dpI
-47 -29 0 1 1 1 (S$$16:52:21) dpI
-47 -41 0 1 1 1 (S$$16:52:24) dpI
-47 -53 0 1 1 1 (S$$16:52:27) dpI
-47 -65 0 1 1 1 (S$$16:52:29) dpI
-47 121 0 1 1 1 (S$$16:52:33) dpI
-47 109 0 1 1 1 (S$$16:52:35) dpI
}{
-47 97 0 1 1 1 (S$$16:52:37) dpI
-47 85 0 1 1 1 (S$$16:52:40) dpI
-47 73 0 1 1 1 (S$$16:52:43) dpI
-47 61 0 1 1 1 (S$$16:52:46) dpI
-47 49 0 1 1 1 (S$$16:52:49) dpI
-47 37 0 1 1 1 (S$$16:52:51) dpI
0 135 (20) 2 1 1 dpP
}{
-9 123 9 132 1 1 1 (RRI) dpS
24 135 (25) 2 1 1 dpP
15 123 33 132 1 1 1 (TRO) dpS
-47 -83 0 1 1 1 (S$$17:08:39) dpI
-47 -107 0 1 1 1 (S$$17:08:41) dpI
-50 -95 0 1 1 1 (S$$17:08:44) dpI
}}def
(S$$10:36:10){18 19 mark{
-2 -5 4 0 21600 1 1 1 0 dpC
-2 -9 (1) 4 1 1 dpP
-9 1 9 10 1 1 1 (OE*) dpS
}}def
(S$$20:07:15){14 9 mark{
-7 1 (18) 2 1 1 dpP
-5 -4 7 5 1 1 1 (8D) dpS
}}def
(S$$20:07:13){14 9 mark{
-7 1 (17) 2 1 1 dpP
-5 -4 7 5 1 1 1 (7D) dpS
}}def
(S$$20:07:12){14 9 mark{
-7 1 (14) 2 1 1 dpP
-5 -4 7 5 1 1 1 (6D) dpS
}}def
(S$$20:07:11){14 9 mark{
-7 1 (13) 2 1 1 dpP
-5 -4 7 5 1 1 1 (5D) dpS
}}def
(S$$20:07:09){14 9 mark{
-7 1 (8) 2 1 1 dpP
-5 -4 7 5 1 1 1 (4D) dpS
}}def
(S$$20:07:07){14 9 mark{
-7 1 (7) 2 1 1 dpP
-5 -4 7 5 1 1 1 (3D) dpS
}}def
(S$$20:07:05){14 9 mark{
-7 1 (4) 2 1 1 dpP
-5 -4 7 5 1 1 1 (2D) dpS
}}def
(S$$20:07:03){14 9 mark{
-7 1 (3) 2 1 1 dpP
-5 -4 7 5 1 1 1 (1D) dpS
}}def
(S$$20:13:29){13 9 mark{
7 1 (2) 1 1 1 dpP
-6 -4 6 5 1 1 1 (1Q) dpS
}}def
(S$$20:13:32){13 9 mark{
7 0 (5) 1 1 1 dpP
-6 -4 6 5 1 1 1 (2Q) dpS
}}def
(S$$20:13:34){13 9 mark{
7 0 (6) 1 1 1 dpP
-6 -4 6 5 1 1 1 (3Q) dpS
}}def
(S$$20:13:36){13 9 mark{
7 1 (9) 1 1 1 dpP
-6 -4 6 5 1 1 1 (4Q) dpS
}}def
(S$$20:13:38){13 9 mark{
7 1 (12) 1 1 1 dpP
-6 -4 6 5 1 1 1 (5Q) dpS
}}def
(S$$20:13:40){13 9 mark{
7 1 (15) 1 1 1 dpP
-6 -4 6 5 1 1 1 (6Q) dpS
}}def
(S$$20:13:42){13 9 mark{
7 1 (16) 1 1 1 dpP
-6 -4 6 5 1 1 1 (7Q) dpS
}}def
(S$$20:13:44){13 9 mark{
7 1 (19) 1 1 1 dpP
-6 -4 6 5 1 1 1 (8Q) dpS
}}def
(S$$20:32:07){12 15 mark{
-5 -7 -5 -7 1 1 1 0 dpL
-5 -7 -5 -7 1 1 1 0 dpL
-1 -1 -5 -7 1 1 1 0 dpL
3 -7 -1 -1 1 1 1 0 dpL
-1 -7 (11) 4 1 1 dpP
}{
-6 -1 6 8 1 1 1 (CK) dpS
}}def
(S74HC374){72 129 mark{
14 -55 0 1 1 1 (S$$10:36:10) dpI
-29 -38 0 1 1 1 (S$$20:07:15) dpI
-29 -26 0 1 1 1 (S$$20:07:13) dpI
-29 -14 0 1 1 1 (S$$20:07:12) dpI
-29 -2 0 1 1 1 (S$$20:07:11) dpI
-29 10 0 1 1 1 (S$$20:07:09) dpI
}{
-29 22 0 1 1 1 (S$$20:07:07) dpI
-29 34 0 1 1 1 (S$$20:07:05) dpI
-29 46 0 1 1 1 (S$$20:07:03) dpI
36 65 -36 65 1 1 1 0 dpL
-12 65 (11) 1 1 1 dpP
12 65 (1) 1 1 1 dpP
29 46 0 1 1 1 (S$$20:13:29) dpI
}{
29 35 0 1 1 1 (S$$20:13:32) dpI
29 23 0 1 1 1 (S$$20:13:34) dpI
29 10 0 1 1 1 (S$$20:13:36) dpI
29 -2 0 1 1 1 (S$$20:13:38) dpI
29 -14 0 1 1 1 (S$$20:13:40) dpI
29 -26 0 1 1 1 (S$$20:13:42) dpI
29 -38 0 1 1 1 (S$$20:13:44) dpI
}{
-11 -48 0 1 1 1 (S$$20:32:07) dpI
-21 55 21 64 1 1 1 (74HC374) dpS
36 65 36 -55 1 1 1 0 dpL
-36 -55 -36 65 1 1 1 0 dpL
36 -55 -36 -55 1 1 1 0 dpL
}}def
350 148 0 1 1 1 (SCAP) dpI
-207 -402 -375 -402 1 1 1 0 dpL
-375 -402 -375 -498 1 1 1 0 dpL
-375 -498 -207 -498 1 1 1 0 dpL
-207 -498 -207 -402 1 1 1 0 dpL
-210 -405 -372 -405 1 1 1 0 dpL
-372 -495 -372 -405 1 1 1 0 dpL
-210 -495 -372 -495 1 1 1 0 dpL
-210 -495 -210 -405 1 1 1 0 dpL
-369 -492 -213 -483 1 1 1 (ARPA: mkb@rover.ri.cmu.edu) dpS
-369 -480 -297 -471 1 1 1 (412-268-8830) dpS
-369 -468 -243 -459 1 1 1 (Pittsburgh, PA, 15213) dpS
-369 -456 -213 -447 1 1 1 (Carnegie-Mellon University) dpS
-369 -444 -243 -435 1 1 1 (The Robotic Institute) dpS
-369 -432 -285 -423 1 1 1 (Mike Blackwell) dpS
-369 -417 -297 -408 1 1 1 (Designed by:) dpS
-3 -488 81 -479 1 1 1 (Mike Blackwell) dpS
24 -506 66 -497 1 1 1 (ptos.dp) dpS
309 -210 339 -201 1 1 1 (>50ns) dpS
342 -132 342 -210 1 1 1 0 dpL
342 -210 282 -210 1 1 1 0 dpL
342 -132 93 -132 1 1 1 0 dpL
93 -54 93 -132 1 1 1 0 dpL
93 -54 -75 -54 1 1 1 0 dpL
-75 -54 -75 63 1 1 1 0 dpL
-75 63 -54 63 1 1 1 0 dpL
318 172 0 1 1 1 (SRES) dpI
317 148 0 1 1 1 (SCAP) dpI
-198 63 0 1 1 1 (SGND) dpI
-18 -225 0 1 1 1 (S74HC688) dpI
-21 -333 -21 -345 1 1 1 0 dpL
-21 -351 0 1 1 1 (SGND) dpI
99 84 105 93 1 1 1 (0) dpS
99 72 105 81 1 1 1 (1) dpS
99 108 105 117 1 1 1 (1) dpS
99 120 105 129 1 1 1 (0) dpS
-333 189 -315 198 1 1 1 (IN0) dpS
-333 177 -315 186 1 1 1 (IN1) dpS
-333 165 -315 174 1 1 1 (IN2) dpS
-333 153 -315 162 1 1 1 (IN3) dpS
-333 141 -315 150 1 1 1 (IN4) dpS
-333 129 -315 138 1 1 1 (IN5) dpS
-333 117 -315 126 1 1 1 (IN6) dpS
-333 105 -315 114 1 1 1 (IN7) dpS
-246 105 -333 105 1 1 1 0 dpL
-246 117 -333 117 1 1 1 0 dpL
-246 129 -333 129 1 1 1 0 dpL
-246 141 -333 141 1 1 1 0 dpL
-246 153 -333 153 1 1 1 0 dpL
-246 165 -333 165 1 1 1 0 dpL
-246 177 -333 177 1 1 1 0 dpL
-246 189 -333 189 1 1 1 0 dpL
-267 189 -267 -231 1 1 1 0 dpL
-267 -231 -54 -231 1 1 1 0 dpL
-273 177 -273 -243 1 1 1 0 dpL
-273 -243 -54 -243 1 1 1 0 dpL
-279 165 -279 -255 1 1 1 0 dpL
-279 -255 -54 -255 1 1 1 0 dpL
-285 153 -285 -267 1 1 1 0 dpL
-285 -267 -54 -267 1 1 1 0 dpL
-291 141 -291 -279 1 1 1 0 dpL
-291 -279 -54 -279 1 1 1 0 dpL
-297 129 -297 -291 1 1 1 0 dpL
-297 -291 -54 -291 1 1 1 0 dpL
-303 117 -303 -303 1 1 1 0 dpL
-303 -303 -54 -303 1 1 1 0 dpL
-309 105 -309 -315 1 1 1 0 dpL
-309 -315 -54 -315 1 1 1 0 dpL
-159 -213 -54 -213 1 1 1 0 dpL
-159 105 -159 -213 1 1 1 0 dpL
-174 105 -54 105 1 1 1 0 dpL
-174 117 -54 117 1 1 1 0 dpL
-153 117 -153 -201 1 1 1 0 dpL
-153 -201 -54 -201 1 1 1 0 dpL
-174 129 -54 129 1 1 1 0 dpL
-147 129 -147 -189 1 1 1 0 dpL
-147 -189 -54 -189 1 1 1 0 dpL
-174 141 -54 141 1 1 1 0 dpL
-141 141 -141 -177 1 1 1 0 dpL
-141 -177 -54 -177 1 1 1 0 dpL
-174 153 -54 153 1 1 1 0 dpL
-135 153 -135 -165 1 1 1 0 dpL
-135 -165 -54 -165 1 1 1 0 dpL
-174 165 -54 165 1 1 1 0 dpL
-129 165 -129 -153 1 1 1 0 dpL
-129 -153 -54 -153 1 1 1 0 dpL
-174 177 -54 177 1 1 1 0 dpL
-123 177 -123 -141 1 1 1 0 dpL
-123 -141 -54 -141 1 1 1 0 dpL
-174 189 -54 189 1 1 1 0 dpL
-117 189 -117 -129 1 1 1 0 dpL
-117 -129 -54 -129 1 1 1 0 dpL
-198 78 -198 69 1 1 1 0 dpL
271 22 0 1 1 1 (S$$11:33:09) dpI
178 93 0 1 1 1 (SSWITCH_4) dpI
205 351 0 1 1 1 (SUA9638) dpI
30 303 30 351 1 1 1 0 dpL
30 351 180 351 1 1 1 0 dpL
342 360 222 360 1 1 1 0 dpL
342 342 222 342 1 1 1 0 dpL
192 315 192 327 1 1 1 0 dpL
192 396 192 375 1 1 1 0 dpL
186 396 198 405 1 1 1 (+5) dpS
105 84 66 84 1 1 1 0 dpL
105 96 66 96 1 1 1 0 dpL
105 108 66 108 1 1 1 0 dpL
105 120 66 120 1 1 1 0 dpL
105 132 66 132 1 1 1 0 dpL
99 132 105 141 1 1 1 (1) dpS
66 228 156 228 1 1 1 0 dpL
156 228 156 204 1 1 1 0 dpL
288 174 0 1 1 1 (SXTAL) dpI
189 171 0 1 1 1 (SHD4702) dpI
351 189 234 189 1 1 1 0 dpL
288 189 288 183 1 1 1 0 dpL
318 189 318 186 1 1 1 0 dpL
261 156 318 156 1 1 1 0 dpL
318 159 318 153 1 1 1 0 dpL
288 156 288 165 1 1 1 0 dpL
261 177 261 156 1 1 1 0 dpL
234 177 261 177 1 1 1 0 dpL
192 309 0 1 1 1 (SGND) dpI
318 138 318 144 1 1 1 0 dpL
351 138 249 138 1 1 1 0 dpL
249 153 234 153 1 1 1 0 dpL
249 138 249 153 1 1 1 0 dpL
264 192 324 201 1 1 1 (2.4576 MHz) dpS
324 165 342 174 1 1 1 (10M) dpS
363 144 387 153 1 1 1 (56pF) dpS
201 36 0 1 1 1 (SGND) dpI
-289 364 0 1 1 1 (SCAP) dpI
351 153 351 189 1 1 1 0 dpL
351 144 351 132 1 1 1 0 dpL
156 108 156 138 1 1 1 0 dpL
171 138 171 108 1 1 1 0 dpL
186 138 186 108 1 1 1 0 dpL
201 138 201 108 1 1 1 0 dpL
156 60 156 78 1 1 1 0 dpL
171 60 171 78 1 1 1 0 dpL
186 60 186 78 1 1 1 0 dpL
201 42 201 78 1 1 1 0 dpL
201 60 156 60 1 1 1 0 dpL
351 126 0 1 1 1 (SGND) dpI
216 120 216 138 1 1 1 0 dpL
126 120 216 120 1 1 1 0 dpL
126 216 126 120 1 1 1 0 dpL
171 216 126 216 1 1 1 0 dpL
171 216 171 204 1 1 1 0 dpL
0 -473 0 1 1 1 (STITLEBOX.BOTTOM) dpI
306 -488 312 -479 1 1 1 (1) dpS
297 -506 351 -497 1 1 1 (25-Jun-87) dpS
-3 -452 165 -443 1 1 1 (Parallel to Serial Converter) dpS
390 8 0 1 1 1 (STITLEBOX.RIGHT) dpI
-390 8 0 1 1 1 (STITLEBOX.LEFT) dpI
0 529 0 1 1 1 (STITLEBOX.TOP) dpI
-3 -470 141 -461 1 1 1 (Macintosh Screen Aligner) dpS
-87 75 -54 75 1 1 1 0 dpL
-87 -72 -87 75 1 1 1 0 dpL
-45 -72 -87 -72 1 1 1 0 dpL
-99 87 -54 87 1 1 1 0 dpL
-99 -96 -99 87 1 1 1 0 dpL
-45 -96 -99 -96 1 1 1 0 dpL
-24 -84 0 1 1 1 (S74HC08) dpI
69 -222 123 -222 1 1 1 0 dpL
63 -84 -3 -84 1 1 1 0 dpL
63 -198 63 -84 1 1 1 0 dpL
63 -198 123 -198 1 1 1 0 dpL
222 -210 165 -210 1 1 1 0 dpL
-222 -381 -222 87 1 1 1 0 dpL
186 -381 -222 -381 1 1 1 0 dpL
186 -381 186 -210 1 1 1 0 dpL
144 -210 0 1 1 1 (S74HC08-2) dpI
345 -488 351 -479 1 1 1 (1) dpS
63 -222 4 0 21600 1 1 1 0 dpC
45 -222 4 0 21600 1 1 1 0 dpC
63 -237 4 0 21600 1 1 1 0 dpC
18 -222 42 -222 1 1 1 0 dpL
63 -264 63 -240 1 1 1 0 dpL
60 -276 108 -267 1 1 1 (External) dpS
60 -288 96 -279 1 1 1 (Strobe) dpS
60 -222 48 -222 1 1 1 0 dpL
-12 177 30 186 1 1 1 (Vcc - 1) dpS
-12 165 30 174 1 1 1 (GND - 3) dpS
276 360 342 369 1 1 1 (OUT+ <J2-8>) dpS
276 342 342 351 1 1 1 (OUT- <J2-9>) dpS
342 318 192 318 1 1 1 0 dpL
270 318 342 327 1 1 1 (<J2-1, J2-3>) dpS
249 -219 0 1 1 1 (S74HC123) dpI
261 -333 273 -324 1 1 1 (+5) dpS
252 -168 252 -192 1 1 1 0 dpL
231 -294 255 -285 1 1 1 (10pF) dpS
273 -306 291 -297 1 1 1 (12K) dpS
249 -168 261 -159 1 1 1 (+5) dpS
264 -324 264 -315 1 1 1 0 dpL
240 -276 246 -276 1 1 1 0 dpL
264 -276 255 -276 1 1 1 0 dpL
264 -288 264 -246 1 1 1 0 dpL
240 -276 240 -246 1 1 1 0 dpL
204 -264 204 -234 1 1 1 0 dpL
204 -234 216 -234 1 1 1 0 dpL
204 -270 0 1 1 1 (SGND) dpI
250 -275 16200 1 1 1 (SCAP) dpI
264 -302 0 1 1 1 (SRES) dpI
-324 363 -294 372 1 1 1 (2.2uF) dpS
-201 366 0 1 1 1 (S74HC123-2) dpI
-189 252 -177 261 1 1 1 (+5) dpS
-198 417 -198 393 1 1 1 0 dpL
-186 261 -186 270 1 1 1 0 dpL
-210 309 -204 309 1 1 1 0 dpL
-186 309 -195 309 1 1 1 0 dpL
-186 297 -186 339 1 1 1 0 dpL
-210 309 -210 339 1 1 1 0 dpL
-246 321 -246 351 1 1 1 0 dpL
-246 351 -234 351 1 1 1 0 dpL
-177 279 -153 288 1 1 1 (100K) dpS
-231 291 -195 300 1 1 1 (0.33uF) dpS
-186 283 0 1 1 1 (SRES) dpI
-200 310 16200 1 1 1 (SCAP) dpI
-201 417 -189 426 1 1 1 (+5) dpS
-246 315 0 1 1 1 (SGND) dpI
-288 375 -228 375 1 1 1 0 dpL
-291 423 -279 432 1 1 1 (+5) dpS
-288 339 0 1 1 1 (SGND) dpI
-288 394 0 1 1 1 (SRES) dpI
-288 369 -288 381 1 1 1 0 dpL
-288 360 -288 345 1 1 1 0 dpL
-288 423 -288 408 1 1 1 0 dpL
-18 303 -18 351 1 1 1 0 dpL
-18 351 -168 351 1 1 1 0 dpL
-318 390 -294 399 1 1 1 (100K) dpS
-132 351 -48 360 1 1 1 (Power-on Reset) dpS
105 72 66 72 1 1 1 0 dpL
99 96 105 105 1 1 1 (1) dpS
6 168 0 1 1 1 (SHD6402) dpI
-210 142 0 1 1 1 (S74HC374) dpI
showpage end dpSave restore
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