forked from rileym65/Website-ElfEmulation
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathmicroelf.html
More file actions
251 lines (246 loc) · 7.53 KB
/
microelf.html
File metadata and controls
251 lines (246 loc) · 7.53 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
<html>
<!--
FILE ARCHIVED ON 14:27:00 Nov 07, 2021 AND RETRIEVED FROM THE
INTERNET ARCHIVE ON 18:00:41 Sep 05, 2025.
-->
<head>
<title>Micro-Elf</title>
</head>
<body text="black" bgcolor="white">
<center>
<h3>Micro-Elf Kits</h3>
<font color="red"><h3>SOLD OUT!!!</h3></font>
</center>
<img src="kit.jpg" align="left">
<p>This kit is based upon my adaptation of the Elf project presented in Popular
Electronics. I have designed a PCB to make for easier construction than the wire-wrap
method I used in my Elf.
</p><p>I have been able to purchase a very limited supply of cdp1802bce cpus, as such
this kit will be a very limited edition offering.
</p><p>I initially plan to release these as build it yourself kits, but if somebody
hassles me enough, I suppose I could build it for you.
</p><p>I will make the bareboard PCBs available without the full kit for those who only
want the PCB. I will not however sell the 1802s outside of the kits. I also intend
to make the PCB engineering files available on this website for anybody who would like
to make the board themselves.
</p><p>If you are interested in one of these kits please write to me at <a href="mailto:mikehriley@hotmail.com">mikehriley@hotmail.com</a>. Due to the limited supply, these kits
are on a first come first served basis.
</p><p>
<br>
<img src="melf.jpg" border="1" align="right">
<b>Features:</b>
</p><ul type="disc">
<li>32k Ram
</li><li>2mhz clock
</li><li>Compact design, board is only 5" x 3.75"
</li><li>Full 4 digit address display (optional)
</li><li>Expansion connector
</li></ul>
<b>Price List:</b>
<table border="0">
<tbody><tr>
<th valign="bottom" align="left">Description</th>
<th valign="bottom" align="left">Price</th>
</tr>
<tr>
<td>Basic Kit (no address display)</td>
<td>$150</td>
</tr>
<tr>
<td>2 digit address option</td>
<td>$45</td>
</tr>
<tr>
<td>4 digit address option</td>
<td>$90</td>
</tr>
<tr>
<td>Bare PCB</td>
<td>$30</td>
</tr>
<tr>
<td>5v Wall Adapter</td>
<td>$14</td>
</tr>
<tr>
<td>Pre-assembly</td>
<td>$65</td>
</tr>
</tbody></table>
Prices include shipping to the lower 48 states.
<p><b>What will you need in addition to the kit:</b><br>
</p><ul>
<li>30 watt soldering iron
</li><li>Fine rosin-core solder
</li><li>Needle-nose pliers
</li><li>Wire cutters
</li><li>A 5 volt power source
</li><li>A clean place to work
</li></ul>
<p><b>Disclaimer:</b><br>
There is no warantee of any kind on Micro/Elf Kits! I make every effort to test all
components before shipping but cannot be responsible if a kit is mis-assembled or the
components are mishandled. For a $100 charge I will repair a mis-assembled kit.
</p><p><b>News:</b>
<table border="0">
<tbody><tr>
<td valign="top">2/24/2004</td>
<td>I have completed analysis of the circuit design. For those interested,
you may <a href="MicroElf.ckt">download the simulation file</a>. The
<a href="https://github.com/rileym65/Jdce">latest version of DCE</a> is required
to run the simulation.
</td>
</tr>
<tr>
<td valign="top">3/01/2004</td>
<td>I have completed the pcb circuit check and have sent for 2 prototypes
from the pcb fab.</td>
</tr>
<tr>
<td valign="top">3/18/2004</td>
<td>Have received all parts to build first prototype</td>
</tr>
<tr>
<td valign="top">3/19/2004</td>
<td>First prototype is now built. Testing functionality</td>
</tr>
<tr>
<td valign="top">3/20/2004</td>
<td>Testing complete. Now finishing up the manual</td>
</tr>
<tr>
<td valign="top">3/23/2004</td>
<td>Now taking reservations</td>
</tr>
<tr>
<td valign="top">4/07/2004</td>
<td>The production PCBs have been ordered. They should arrive on
4/13 at which point Micro/Elf kits and boards will be available
for purchase</td>
</tr>
<tr>
<td valign="top">4/14/2004</td>
<td>Production PCBs have arrived. Tonight I will build one, if all goes well, then
Micro/Elfs will be available</td>
</tr>
<tr>
<td valign="top">4/15/2004</td>
<td>First kit built, all works! Boards and kits are now available!!!</td>
</tr>
</tbody></table>
</p><p>
<b>Parts List:</b>
<table border="0">
<tbody><tr>
<th>Quantity</th>
<th>Description</th>
<th>Quantity</th>
<th>Description</th>
</tr>
<tr>
<td align="center">1</td>
<td>Micro/Elf PCB</td>
<td align="center">1</td>
<td>470 Ohm Resistor</td>
</tr>
<tr>
<td align="center">1</td>
<td>CDP1802 CPU</td>
<td align="center">7</td>
<td>47K Ohm Resistors</td>
</tr>
<tr>
<td align="center">2</td>
<td>TIL-311 Hex Displays</td>
<td align="center">1</td>
<td>2mhz Crystal Oscilator</td>
</tr>
<tr>
<td align="center">1</td>
<td>CY7C199 (or equivalent) 32K Static Ram</td>
<td align="center">1</td>
<td>2x18 Pin Header</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS00 Quad NAND Gate</td>
<td align="center">1</td>
<td>1x2 Pin Header</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS04 Hex Inverter</td>
<td align="center">11</td>
<td>SPDT Toggle Switches</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS74 Dual D-type Flip-Flop</td>
<td align="center">1</td>
<td>SPDT Push-Button</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS151 8-Input Multiplexer</td>
<td align="center">5</td>
<td>14-Pin Sockets</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS244 Octal Tri-State Driver</td>
<td align="center">1</td>
<td>14-Pin Oscilator Socket</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS279 Quad S-R Latches</td>
<td align="center">3</td>
<td>16-Pin Sockets</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS367 Hex Tri-State Buffers</td>
<td align="center">2</td>
<td>20-Pin Sockets</td>
</tr>
<tr>
<td align="center">1</td>
<td>74LS373 Octal Latch</td>
<td align="center">1</td>
<td>28-Pin Socket</td>
</tr>
<tr>
<td align="center">1</td>
<td>LED</td>
<td align="center">1</td>
<td>40-Pin Socket</td>
</tr>
</tbody></table>
<b>Expansion Connector Pinout</b><br>
<img src="pinout.gif">
</p><center><img src="microelf.jpg" align="middle"></center>
<hr>
<center><h3>Micro/Elf Expansions</h3></center>
I am nearing the completion of the design work on 3 expansion options for the
Micro/Elf. I will post pictures of the expansion boards soon. Expansions 1
and 2 are visible on the picture of my Micro/Elf and my main page.
<ol type="1">
<li>32KRam,IDE/CF,Serial Expansion<br>
This expansion card provides a socket (.6") decoded for the top 32k of
ram. This socket is jumper selectable for NVRAM, SRAM, or EPROM. This
expansion also includes a Q/EF? serial port, the EF line used by the
serial port is jumper selectable. An IDE/CF interface is also included
on this expansion. The ports used by the IDE interface are hard set at
2 and 3. An expanded version of the Micro/Elf expansion bus is also
provided.
</li><li>Hex Keypad<br>
This expansion plugs into the 74ls244 socket of the Micro/Elf board and
provides a 16 key hexadecimal keypad. Make program entry easier with
this option!
</li><li>Pixie Graphics/PS2 Keyboard Interface<br>
This expansion adds Pixie Graphics (cdp1861) to the Micro/Elf as well
as a PS2 style keyboard interface. The ports/EF lines used by the
Pixie chip and the PS2 keyboard interface are jumper selectable.
</li></ol>
</body>
</html>