Difference between revisions of "LB-MEM-03"
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| Line 41: | Line 41: | ||
* 28 pin parts | * 28 pin parts | ||
* 27C256 jumpers | * 27C256 jumpers | ||
| − | ** J2:1-2 | + | ** J2:1-2 (Vcc) |
| − | |||
** J3 - Not installed | ** J3 - Not installed | ||
** J4:1-2 (Vcc) | ** J4:1-2 (Vcc) | ||
| Line 49: | Line 48: | ||
* 27C512 jumpers | * 27C512 jumpers | ||
| − | ** J2: | + | ** J2:2-3 (A15) |
** J3 - Not installed | ** J3 - Not installed | ||
** J4: | ** J4: | ||
Revision as of 17:00, 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 (Vcc)
- J3 - Not installed
- J4:1-2 (Vcc)
- J5 - Not installed
- J6:2-3 (Vcc)
- 27C512 jumpers
- J2:2-3 (A15)
- 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
