Difference between revisions of "LB-MEM-03"
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[[file:LB-MEM-03_JUMPERS.PNG]] | [[file:LB-MEM-03_JUMPERS.PNG]] | ||
| + | |||
| + | * 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 ==== | ==== 27C256/27C512 EPROMs ==== | ||
Revision as of 16:40, 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
All EPROMs
Backplane
Mechanicals
Checkout
Rev 1
- Holes were very tight for ZIF pins
Assembly Sheet
- Interactive BOM
