28C256 to 27C256: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 1: | Line 1: | ||
=27C256 | =28C256 to 27C256 adapter= | ||
This is an adapter PCB to plug a 28C256 into a socket that expects a 27C256. The 28C256 is (re)programmable without needing a test clip, by virtue of on-board jumpers to switch the pinout between 27C256 and 28C256. | This is an adapter PCB to plug a 28C256 into a socket that expects a 27C256 or a mas rom. | ||
The 28C256 is (re)programmable without needing a test clip, by virtue of on-board jumpers to switch the pinout between 27C256 and 28C256. IE, the board is also it's own programming adapter. | |||
<gallery> | <gallery> | ||
| Line 7: | Line 9: | ||
27C256_28C256-3.png | 27C256_28C256-3.png | ||
27C256_28C256-4.png | 27C256_28C256-4.png | ||
28C256_to_27C256_5.jpg | |||
28C256_to_27C256_6.jpg | |||
FlashROM_8300_14.jpg | FlashROM_8300_14.jpg | ||
</gallery> | </gallery> | ||
Revision as of 17:33, 19 November 2020
28C256 to 27C256 adapter
This is an adapter PCB to plug a 28C256 into a socket that expects a 27C256 or a mas rom.
The 28C256 is (re)programmable without needing a test clip, by virtue of on-board jumpers to switch the pinout between 27C256 and 28C256. IE, the board is also it's own programming adapter.
How to do the DIP legs
