Difference between revisions of "LB-MEM-03"
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| Line 19: | Line 19: | ||
[[file:LB-MEM-03_JUMPERS.PNG]] | [[file:LB-MEM-03_JUMPERS.PNG]] | ||
| − | * J2 (A15) | + | * J2 (A15/Vcc) |
** Pin 3 on 32-pin part | ** Pin 3 on 32-pin part | ||
** Pin 1 on 28-pin part | ** Pin 1 on 28-pin part | ||
| − | * J3 (A19) | + | * J3 (A19/Vcc) |
** Pin 1 on 32 pin part | ** Pin 1 on 32 pin part | ||
** Not used on 28-pin part | ** Not used on 28-pin part | ||
| − | * J4 (A17) | + | * J4 (A17/Vcc) |
** Pin 30 on 32-pin part | ** Pin 30 on 32-pin part | ||
** Pin 28 on 28-pin part | ** Pin 28 on 28-pin part | ||
| − | * J5 (A18) | + | * J5 (A18/Vcc) |
** Pin 31 on 32-pin part | ** Pin 31 on 32-pin part | ||
** Not used on 28-pin part | ** Not used on 28-pin part | ||
| − | * J6 (A14) | + | * J6 (A14/Vcc) |
** Pin 29 on 32-pin part | ** Pin 29 on 32-pin part | ||
** Pin 26 on 28-pin part | ** Pin 26 on 28-pin part | ||
Revision as of 16:48, 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
- 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
