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2
LDP/howto/docbook/HOWTO-INDEX/howtoChap.sgml
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@ -421,7 +421,7 @@ Shows some typical scenarios for easy start using Diald.
Diskless-HOWTO</ULink>,
<CiteTitle>Diskless Nodes HOWTO for Linux</CiteTitle>
</Para><Para>
<CiteTitle>Updated: July 2000</CiteTitle>.
<CiteTitle>Updated: September 2000</CiteTitle>.
How to set up a diskless Linux box. </Para>
</ListItem>

2
LDP/howto/docbook/HOWTO-INDEX/hwSect.sgml
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@ -76,7 +76,7 @@ laptop. </Para>
Diskless-HOWTO</ULink>,
<CiteTitle>Diskless Nodes HOWTO for Linux</CiteTitle>
</Para><Para>
<CiteTitle>Updated: July 2000</CiteTitle>.
<CiteTitle>Updated: September 2000</CiteTitle>.
How to set up a diskless Linux box. </Para>
</ListItem>

2
LDP/howto/docbook/HOWTO-INDEX/networkingSect.sgml
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@ -76,7 +76,7 @@ from a network. </Para>
Diskless-HOWTO</ULink>,
<CiteTitle>Diskless Nodes HOWTO for Linux</CiteTitle>
</Para><Para>
<CiteTitle>Updated: April 2000</CiteTitle>.
<CiteTitle>Updated: September 2000</CiteTitle>.
How to set up a diskless Linux box. </Para>
</ListItem>

235
LDP/howto/linuxdoc/Diskless-HOWTO.sgml
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@ -52,7 +52,7 @@ DISKLESS NODES HOW-TO for Linux
<htmlurl url="mailto:gero@gkminix.han.de"
name="gero@gkminix.han.de">
<date>v12.0, 10 Jul 2000
<date>v13.0, 03 Sep 2000
<abstract>
This document describes how to set up a diskless Linux box.
As technology is advancing rapidly, network-cards are becoming cheaper and much
@ -312,11 +312,242 @@ Related topics worth seeing -
<chapt> EPROM Burners and Memory chips
-->
<sect> Building EEPROM Burner
<p>
<!--
*******************************************
************ End of Section ***************
*******************************************
-->
<sect1> What is this ?
<p>
This chapter is written by Abhijit and is reproduced here from
<url url="http://www.nnaf.net/~abhijit/eep">.
A photo of the burner is at -
<url url="http://www.nnaf.net/~abhijit/pictures/eeprom-burner.jpg">
This is an eeprom burner for the 2816/2864 type of eeproms.
There are various designs available, but the main goal was to
have something which
<itemize>
<item> is cheap (less than $35)
<item> is easy to build and uses only commonly available parts
<item> works with linux
</itemize>
This one uses a handful of 74HCTxx logic chips all available
at the local Radio Shack store! It uses the PC parallel port
interface, and Abhijit wrote the driver code for Linux only, but it
should be easy to modify it for other PC operating systems.
This was used to burn netboot PROMs for ethernet cards, which
were used to make diskless linux boxes. See the netboot/etherboot
packages for details of how to do that. You can also use it
for building microcontroller systems with external ROM (e.g. 8031).
<!--
*******************************************
************ End of Section ***************
*******************************************
-->
<sect1> Construction
<p>
WARNING: It is easy to destroy the parallel port of your PC by
connecting things to it. It is also possible to damage or destroy
the whole PC, its attachments, peripherals, and people near it
by improper connections and electrical accidents. USE EXTREME
CAUTION.
Disclaimer: Use at your own risk. There is absolutely
no warranty of any kind here.
The programmer can be built on a breadboard, but use a protoboard
for a more permanent version. Use 0.1uF power-bus bypass capacitors
generously. The 5V power source can be obtained from the PC itself,
but be careful here.
<!--
*******************************************
************ End of Section ***************
*******************************************
-->
<sect1> Parts List
<p>
<itemize>
<item> <bf>ICs:</bf> 74HCT123, 74HCT132, 74HCT138, 74HCT157, 74HCT574 (1 ea),
and 2 74HCT259s.
<item> <bf>Resistors:</bf> 100K, 10K, 1K, and 390 ohms (1 ea).
<item> <bf>Capacitors:</bf> 100pF, 1uF, (1 ea) and 3 0.1uF power-bus bypass capacitors.
<item> <bf>Misc:</bf> 1 LED, 1 SPST switch, 25-conductor ribbon cable with DB25
male connector, 28 pin ZIF socket (small breadboard can be
used instead), jumper pins.
</itemize>
<!--
*******************************************
************ End of Section ***************
*******************************************
-->
<sect1> Usage
<p>
Download the software from <url url="http://www.nnaf.net/~abhijit/eep/eeprom.tar.gz">.
To build the software, just cd to the src directory and type `make';
<code>
readrom
-------
readrom will read a specified number of bytes from a 2816/2864 eeprom
starting at a given offset, and send it to the standard output in
either binary (raw) or ascii-hex listing format.
Usage:
readrom -b|-t offset size
where
-b output binary (raw) bytes
-t output text (ascii-hex) listing
offset start address of eeprom, 0..8191
size number of bytes to output, 0..8192
Examples:
# read the contents of a 2864 in binary (raw) form and save it in a file:
readrom -b 0 8192 > contents.bin
# list 80 bytes starting at offset 32:
readrom -t 32 80
writerom
--------
writerom will read a given number of bytes from the standard input and
write them into a 2816/2864 eeprom starting at a specified offset.
writerom verifies the eeprom byte-by-byte as it writes into it.
Usage:
writerom offset size
where
offset start address of eeprom, 0..8191
size number of bytes to output, 0..8192
Example:
# Write 8192 bytes from the file ne.lzrom into the eeprom:
writerom 0 8192 < ne.lzrom
</code>
<!--
*******************************************
************ End of Section ***************
*******************************************
-->
<sect1> Schematic Diagram
<p>
The schematic is in ascii, but a PostScript version
which looks better is available from
<url url="http://www.nnaf.net/~abhijit/eep/eeprom/schematic.ps">
<code>
+-------+
+5-------|RST | +5---o o o J1 +-----------+
+5--o----|/CLR1 | 10K | | |
| | |-----o--/VVV\-- +5 +----------|26 +5(NC) |
+------+ | |1/2 123| | +----------->|27 NC(/WE) |
16 o-|/CS2 | | | |--||-+ | +--------->|23 /WE(A11)|
| CS1|----o----|B1 | 100pF | | | |
| | | /Q1|---------->---------o o o J2 | ZIF28 |
| Y1|---------|/A1 | | | socket |
| 138 | +-------+ _ 1/2 74HCT132 | | for |
| | +5 --| \ __ | | 2816(2864)|
| Y2|--------------------------| O--| \ | | |
8 o-|A2 | +-------+ |_/ | O-------------->|/OE |
7 o-|A1 Y4|--------------->|EN Y7|-----o-|_/ | | |
6 o-|A0 Y3|----+ +5-----|RST | | | | |
| Y0|-+ | | Y6|--+ | | | |
| /CS3| | | | 259 | | | | | |
+------+ | | | Y4|--|--|-----------|------->|2 NC(A12) |
| | | | Y3|--|--|-----------+ | |
5 o--->---|--|--|--------o--|D Y2|--|--|------------------->|A10 |
4 o--->---|--|--|------o-|--|A2 Y1|--|--|------------------->|A9 |
3 o--->---|--|--|----o-|-|--|A1 Y0|--|--|------------------->|A8 |
2 o--->---|--|--|--o-|-|-|--|A0 | | | | |
| | | | | | | +-------+ | | +5------------|28 NC(+5) |
| | | | | | | | | +5----/VVV\---|1 NC(RDY) |
| | | | | | | +-------+ | | 1K | |
| | | | | | | | Y7|--|--|------------o------>|A7 |
| | +---------->|EN |--|--|-----------o|------>| |
| | | | | | | |--|--|----------o||------>| |
| | | | | | | 259 |--|--|---------o|||------>| |
| | | | | | | |--|--|--------o||||------>| |
| | | | | | | |--|--|-------o|||||------>| |
| | | | | +--|D |--|--|------o||||||------>| |
| | | | +----|A2 Y0|--|--|-----o|||||||------>|A0 |
| | | +------|A1 | | | |||||||| | |
| | +--------|A0 RST| | | |||||||| | ZIF28 |
| | +-------+ | | +------------+ | for |
| | | | | | data in | | 2816/64 |
| | +5 | +-->|/OE | | |
| | | | 574 | | |
| +------------------------------->|CLK | | |
| | | data out | | |
| V +------------+ | |
+----+ +------------+ |||||||| | |
| | SEL | |||||||| | |
| | B3|<----|||||||o------|D7 |
11 o---<-----------------------|Y3 B2|<----||||||o-------| |
12 o---<-----------------------|Y2 B1|<----|||||o--------| |
13 o---<-----------------------|Y1 157 B0|<----||||o---------| |
15 o---<-----------------------|Y0 A3|<----|||o----------| |
| | A2|<----||o--- data---| |
| | A1|<----|o---- bus ---| |
| GND----|/OE A0|<----o-------------|D0 |
+5--o--+ | +------------+ | |
| | __ o---------------------------------------------->|/CE |
100K +-| \ | __ +-----------+
sw1 | | O-o-| \ 1/2 74HCT132
o-->o----|__/ | O---390ohm--+
| | +-|__/ |
| --- 1uF | LED
| --- +5--+ |
| | |
+---o----------------------------o- GND
</code>
Notes:
<enum>
<item> Pin numbers on the left margin are for DB25 parallel port.
<item> Pin numbers in the right box are for the _ZIF28 socket_, not the IC.
<item> A 2816 should be low-justified in the ZIF28 socket.
<item> J1 and J2 are single-row 3-pin jumpers. For both jumpers, the left two
pins should be jumpered for a 2816, the right two for a 2864.
<item> The signal labels for a 2864 (if different from 2816) in the ZIF28
socket box are given in parentheses. E.g. pin 23 of the ZIF 28
is labeled "23 /WE(A11)", so it is /WE for a 2816, and A11 for a 2864.
<item> Sw1 needs to be open to enable operation of the programmer.
</enum>
<!--
*******************************************
************ End of Section ***************
*******************************************
<chapt> EPROM Burners and Memory chips
-->
<sect> EPROM Burners and Memory chips
<p>
In the following chapters you will need information about EPROM burners which are given below.
Below is the information about EPROM and various types of memory chips.
<!--
*******************************************
************ End of Section ***************