Difference between revisions of "LB-MEM-03"
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| Line 48: | Line 48: | ||
* 27C512 jumpers | * 27C512 jumpers | ||
| − | ** J2 | + | ** J2: |
** J3 - Not installed | ** J3 - Not installed | ||
| − | ** J4 | + | ** J4: |
** J5 - Not installed | ** J5 - Not installed | ||
| − | ** J6 | + | ** J6: |
==== All EPROMs ==== | ==== All EPROMs ==== | ||
Revision as of 16:57, 20 August 2024
- EPROM/EEPROM card
- 32-pin ZIF socket
- Up to 1MB
- Headers to jump for smaller parts
- Connects to Address/Data and Memory control lines
- 50x75mm card
Contents
Design
EPROM in ZIF socket
EPROM Size Jumpers
- J2 (A15/Vcc)
- Pin 3 on 32-pin part
- Pin 1 on 28-pin part
- J3 (A19/Vcc)
- Pin 1 on 32 pin part
- Not used on 28-pin part
- J4 (A17/Vcc)
- Pin 30 on 32-pin part
- Pin 28 on 28-pin part
- J5 (A18/Vcc)
- Pin 31 on 32-pin part
- Not used on 28-pin part
- J6 (A14/Vcc)
- Pin 29 on 32-pin part
- Pin 26 on 28-pin part
27C256/27C512 EPROMs
- 28 pin parts
- 27C256 jumpers
- J2:1-2
- J3 - Not installed
- J4:1-2
- J5 - Not installed
- J6:2-3
- 27C512 jumpers
- J2:
- J3 - Not installed
- J4:
- J5 - Not installed
- J6:
All EPROMs
Backplane
Mechanicals
Checkout
Rev 1
- Holes were very tight for ZIF pins
Assembly Sheet
- Interactive BOM
