This is revision A of the EPROM 64K Plug and it is currently a work in progress.

EMDP1 EPROM 64K Plug (Rev. A)

Table of Contents
Introduction
Schematic
Printed Circuit Board
Tables
Issues

Introduction

The EMDP1 EPROM 64K plug is used to program the 27C512 (64K×8) EPROM.

Schematic

The schematic for this revision is shown below:

Printed Circuit Board

The following printed circuit board files exist:

plug64k_artwork.png: The artwork layer picture (PNG).
plug64k_back.png: The back layer picture (PNG).
plug64k_front.png: The front layer picture (PNG).
plug64k.gal: The artwork Gerber (RS274X) file.
plug64k.gbl: The back (solder side) Gerber (RS274X) file
plug64k.gtl: The front (component side) Gerber (RS274X) file.
plug64k.gml: The mask (both sides) Gerber RS274X) file.
plug64k.drl: The drill (Excellon) file.
plug64k.tol: The tool file that lists hole counts.

Tables

The table below shows were each of the BD signals winds up:

Pin EMDP1 Name Connected To Chip Name Chip Pin
1 SCL U1-SCL
2 GND Ground GND 14
3 SDA U1-SDA
4
5
6 +5V Vcc
7
8 BD0 ZIF40 Pin 25
9 BD1 ZIF40 Pin 27 O3 15
10 BD2 ZIF40 Pin 26
11 BD3 ZIF40 Pin 28 O4 16
12 BD4 Strobe A6-A11
13 BD5 ZIF40 Pin 15; U2-A4; U3-A10 A4 (via U2-A4) 6
14 BD6 ZIF40 Pin 30 O6 18
15 BD7 ZIF40 Pin 13; U2-A3; U3-A9 O2, A5 (via U2-A3), A2 (via U3-A9) 13, 5, 8
16 BD8 ZIF40 Pin 31 O7 19
17 BD9 ZIF40 Pin 29; U2-A5; U3-A11 O5, A3 (via U2-A5), A15 (via U3-A11) 17, 7, 1
18 BD10 Strobe U2-(A0-A5)
19 BD11 ZIF40 Pin 11; U2-A2; U3-A8 O0, A6 (via U2-A2), A11 (via U3-A8) 11, 4, 23
20 BD12 Plug BD12 O1 12
21 BD13 ZIF40 Pin 10; U2-A1; U3-A7 A0, A7 (via U2-A1), A13 (via U3-A7) 10, 3, 26
22 BD14 Plug BD14 CE 20
23 BD15 ZIF40 Pin 9; U2-A0; U3-A6 A1, A12 (via U2-A0), A8 (via U3-A6) 9, 2, 25
24 BD16 Plug BD16
25 BD17 Program LED
26 BD18 Plug BD18 A9 24
27 BD19 ZIF40 Pin 39 A14/PGM 27
28 BD20 ZIF40 Pin 33 A10 21
29 BD21 Plug ID0
30 BD22 Plug ID1
31 BD23 Plug ID2
32 BD24 Plug ID3
33 BD25 Ground
34 BD26 Ground
35 BD27
36 VAR1 Plug V1 OE/V 22
37 VAR2 ZIF40 Pin 40 VCC 28
38
39
40

Pin	EMDP1 Name	Connected To	Chip Name	Chip Pin
1	SCL	U1-SCL
2	GND	Ground	GND	14
3	SDA	U1-SDA
4
5
6	+5V	Vcc
7
8	BD0	ZIF40 Pin 25
9	BD1	ZIF40 Pin 27	O3	15
10	BD2	ZIF40 Pin 26
11	BD3	ZIF40 Pin 28	O4	16
12	BD4	Strobe A6-A11
13	BD5	ZIF40 Pin 15; U2-A4; U3-A10	A4 (via U2-A4)	6
14	BD6	ZIF40 Pin 30	O6	18
15	BD7	ZIF40 Pin 13; U2-A3; U3-A9	O2, A5 (via U2-A3), A2 (via U3-A9)	13, 5, 8
16	BD8	ZIF40 Pin 31	O7	19
17	BD9	ZIF40 Pin 29; U2-A5; U3-A11	O5, A3 (via U2-A5), A15 (via U3-A11)	17, 7, 1
18	BD10	Strobe U2-(A0-A5)
19	BD11	ZIF40 Pin 11; U2-A2; U3-A8	O0, A6 (via U2-A2), A11 (via U3-A8)	11, 4, 23
20	BD12	Plug BD12	O1	12
21	BD13	ZIF40 Pin 10; U2-A1; U3-A7	A0, A7 (via U2-A1), A13 (via U3-A7)	10, 3, 26
22	BD14	Plug BD14	CE	20
23	BD15	ZIF40 Pin 9; U2-A0; U3-A6	A1, A12 (via U2-A0), A8 (via U3-A6)	9, 2, 25
24	BD16	Plug BD16
25	BD17	Program LED
26	BD18	Plug BD18	A9	24
27	BD19	ZIF40 Pin 39	A14/PGM	27
28	BD20	ZIF40 Pin 33	A10	21
29	BD21	Plug ID0
30	BD22	Plug ID1
31	BD23	Plug ID2
32	BD24	Plug ID3
33	BD25	Ground
34	BD26	Ground
35	BD27
36	VAR1	Plug V1	OE/V	22
37	VAR2	ZIF40 Pin 40	VCC	28
38
39
40

The table below shows were each of the pins goes:

Pin Name BDx

1 A15 (via U3-A11) BD9

2 A12 (via U2-A0) BD15

3 A7 (via U2-A1) BD13

4 A6 (via U2-A2) BD11

5 A5 (via U2-A3) BD7

6 A4 (via U2-A4) BD5

7 A3 (via U2-A5) BD9

8 A2 (via U3-A9) BD7

9 A1 BD15

10 A0 BD13

11 O0 BD11

12 O1 BD12

13 O2 BD7

14 GND GND

15 O3 BD1

16 O4 BD3

17 O5 BD9

18 O6 BD6

19 O7 BD8

20 CE BD14

21 A10 BD20

22 OE/V VAR1

23 A11 (via U3-A8) BD11

24 A9 BD18

25 A8 (via U3-A6) BD15

26 A13 (via U3-A7) BD13

27 A14/PGM BD19

28 VCC VAR2

Pin	Name	BDx
1	A15 (via U3-A11)	BD9
2	A12 (via U2-A0)	BD15
3	A7 (via U2-A1)	BD13
4	A6 (via U2-A2)	BD11
5	A5 (via U2-A3)	BD7
6	A4 (via U2-A4)	BD5
7	A3 (via U2-A5)	BD9
8	A2 (via U3-A9)	BD7
9	A1	BD15
10	A0	BD13
11	O0	BD11
12	O1	BD12
13	O2	BD7
14	GND	GND
15	O3	BD1
16	O4	BD3
17	O5	BD9
18	O6	BD6
19	O7	BD8
20	CE	BD14
21	A10	BD20
22	OE/V	VAR1
23	A11 (via U3-A8)	BD11
24	A9	BD18
25	A8 (via U3-A6)	BD15
26	A13 (via U3-A7)	BD13
27	A14/PGM	BD19
28	VCC	VAR2

Issues