Difference between revisions of "LB-MEM-03"
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Blwikiadmin (talk | contribs) (Created page with "file:LB-MEM-03_REV1-FRONT-3D.png * LB-MEM-03 * EPROM/EEPROM card * 32-pin ZIF socket * Up to 1MB * Supports smaller SRAMs ** Headers to jump for smaller parts * Conne...") |
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| − | [[file:LB-MEM- | + | [[file:LB-MEM-03_P1090751-720px.jpg]] |
| − | |||
* EPROM/EEPROM card | * EPROM/EEPROM card | ||
* 32-pin ZIF socket | * 32-pin ZIF socket | ||
* Up to 1MB | * Up to 1MB | ||
| − | |||
** Headers to jump for smaller parts | ** Headers to jump for smaller parts | ||
* Connects to Address/Data and Memory control lines | * Connects to Address/Data and Memory control lines | ||
* 50x75mm card | * 50x75mm card | ||
| + | |||
| + | |||
| + | == Design == | ||
| + | |||
| + | === EPROM in ZIF socket === | ||
| + | |||
| + | [[file:LB-MEM-03_EPROM.PNG]] | ||
| + | |||
| + | === EPROM Size Jumpers === | ||
| + | |||
| + | [[file:LB-MEM-03_JUMPERS.PNG]] | ||
| + | |||
| + | * 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 ==== | ||
| + | |||
| + | [[file:LB-MEM-03_EPROM_27C256_512.PNG]] | ||
| + | |||
| + | [[file:LB-665CXX-01_REV2_Jumpers.PNG]] | ||
| + | |||
| + | * 28 pin parts | ||
| + | * 27C256 jumpers (32B) | ||
| + | ** A15: J2:1-2 (Vcc) | ||
| + | ** A19: J3 - Not installed | ||
| + | ** A17: J4:1-2 (Vcc) | ||
| + | ** A18 J5 - Not installed | ||
| + | ** A14: J6:2-3 (A14) | ||
| + | |||
| + | * 27C512 jumpers (64KB) | ||
| + | ** A15: J2:2-3 (A15) | ||
| + | ** A19: J3 - Not installed | ||
| + | ** A17: J4::1-2 (Vcc) | ||
| + | ** A18: J5 - Not installed | ||
| + | ** A14 J6:2-3 (A14) | ||
| + | |||
| + | ==== All EPROMs ==== | ||
| + | |||
| + | [[file:LB-MEM-03_EPROM_VARS.PNG]] | ||
| + | |||
| + | === Backplane=== | ||
| + | |||
| + | [[file:LB-MEM-03_BKPL.PNG]] | ||
| + | |||
| + | == Mechanicals == | ||
| + | |||
| + | [[file:LB-MEM-03_REV1_MECH.PNG]] | ||
| + | |||
| + | == Checkout == | ||
| + | |||
| + | === Rev 2 === | ||
| + | |||
| + | * Rev 2 PCB holes are good size | ||
| + | * Tested with [[LB-6809-01]] card | ||
| + | ** Works | ||
| + | |||
| + | === Rev 1 === | ||
| + | |||
| + | * Holes were very tight for ZIF pins | ||
| + | |||
| + | == Assembly Sheet == | ||
| + | |||
| + | * Interactive BOM | ||
Latest revision as of 14:00, 16 October 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)
- A15: J2:1-2 (Vcc)
- A19: J3 - Not installed
- A17: J4:1-2 (Vcc)
- A18 J5 - Not installed
- A14: J6:2-3 (A14)
- 27C512 jumpers (64KB)
- A15: J2:2-3 (A15)
- A19: J3 - Not installed
- A17: J4::1-2 (Vcc)
- A18: J5 - Not installed
- A14 J6:2-3 (A14)
All EPROMs
Backplane
Mechanicals
Checkout
Rev 2
- Rev 2 PCB holes are good size
- Tested with LB-6809-01 card
- Works
Rev 1
- Holes were very tight for ZIF pins
Assembly Sheet
- Interactive BOM
