It's easy.
Step 1. Remove the old chip.

Step 2. Install and Solder the DIP Socket

Step 3. Install the 27SF512 Chip

Step 4. Install the Memcal Cover.

Step 5. Program 27SF512 Chip using Moates.Net HDR1 Memcal Header http://www.moates.net/hdr1-memcal-heade ... l?cPath=64"
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