Difference between revisions of "LB-MEM-02"
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==== 27C256/27C512 EPROMs ==== | ==== 27C256/27C512 EPROMs ==== | ||
| − | * Card has a 16KB size | + | * Card has a 16KB size from the CPU |
* 27C256 (32KB) and 27C512 (64KB) Flash EPROMs are commonly available | * 27C256 (32KB) and 27C512 (64KB) Flash EPROMs are commonly available | ||
* Jumpers allow firmware banks to be selected | * Jumpers allow firmware banks to be selected | ||
Revision as of 21:42, 25 August 2024
Contents
Features
- 32KB SRAM
- 16KB EPROM
- Headers to select PROM bank
- Connects to Address/Data and Memory control lines
- 50x75mm card
Design
SRAM
EPROM
- LB-65CXX-01 card has 16 KB PROM from 0xC000-0xFFFF
- LB-6809-01 card has 16 KB PROM from 0xC000-0xFFFF
- LB-Z80-01 card has 8KB PROM from 0x0000-0x1FFF (upper 8KB is not used)
Rev 1 Parts/Jumpers
27C256/27C512 EPROMs
- Card has a 16KB size from the CPU
- 27C256 (32KB) and 27C512 (64KB) Flash EPROMs are commonly available
- Jumpers allow firmware banks to be selected
- 2 banks in 27C256
- 4 banks in 27C512
Backplane Connector
Mechanicals
Checkout
Rev 1
- OK
