Difference between revisions of "LB-MEM-03"
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| Line 42: | Line 42: | ||
* 27C256 jumpers | * 27C256 jumpers | ||
** J2 | ** J2 | ||
| − | ** J3 | + | ** J3 - Not installed |
** J4 | ** J4 | ||
| − | ** J5 | + | ** J5 - Not installed |
** J6 | ** J6 | ||
* 27C512 jumpers | * 27C512 jumpers | ||
** J2 | ** J2 | ||
| − | ** J3 | + | ** J3 - Not installed |
** J4 | ** J4 | ||
| − | ** J5 | + | ** J5 - Not installed |
** J6 | ** J6 | ||
Revision as of 16:46, 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)
- Pin 3 on 32-pin part
- Pin 1 on 28-pin part
- J3 (A19)
- Pin 1 on 32 pin part
- Not used on 28-pin part
- J4 (A17)
- Pin 30 on 32-pin part
- Pin 28 on 28-pin part
- J5 (A18)
- Pin 31 on 32-pin part
- Not used on 28-pin part
- J6 (A14)
- Pin 29 on 32-pin part
- Pin 26 on 28-pin part
27C256/27C512 EPROMs
- 28 pin parts
- 27C256 jumpers
- J2
- J3 - Not installed
- J4
- J5 - Not installed
- J6
- 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
