Difference between revisions of "LB-MEM-03"
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| Line 40: | Line 40: | ||
* 28 pin parts | * 28 pin parts | ||
| − | * 27C256 jumpers | + | * 27C256 jumpers (32B) |
** J2:1-2 (Vcc) | ** J2:1-2 (Vcc) | ||
** J3 - Not installed | ** J3 - Not installed | ||
| Line 47: | Line 47: | ||
** J6:2-3 (A14) | ** J6:2-3 (A14) | ||
| − | * 27C512 jumpers | + | * 27C512 jumpers (64KB) |
** J2:2-3 (A15) | ** J2:2-3 (A15) | ||
** J3 - Not installed | ** J3 - Not installed | ||
Revision as of 17:21, 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 27 on 28-pin part
27C256/27C512 EPROMs
- 28 pin parts
- 27C256 jumpers (32B)
- J2:1-2 (Vcc)
- J3 - Not installed
- J4:1-2 (Vcc)
- J5 - Not installed
- J6:2-3 (A14)
- 27C512 jumpers (64KB)
- J2:2-3 (A15)
- J3 - Not installed
- J4::1-2 (Vcc)
- J5 - Not installed
- J6:2-3 (A14)
All EPROMs
Backplane
Mechanicals
Checkout
Rev 1
- Holes were very tight for ZIF pins
Assembly Sheet
- Interactive BOM
