I'd like to upgrade my Macintosh II to FDHD, I have a SWIM chip (to replace the WIM chip), but don't know how to burn the ROMS.
The upgrade process I'm trying to do is described in the book: "Macintosh If Repair and Upgrade Secrets"
Installing an FDHD/ROM Upgrade into a Macintosh II
The official Apple FDHD Macintosh II Upgrade Kit, pan number M0244, provides the five chips you need to get a 1.4 MB super drive working in an original Macintosh II. Table 8-2 provides a parts list with board references for various revisions of the Macintosh 11 logic board. Figure 8-3 shows the general area where the five chips are located.
The current chip part numbers and board locations are
|Location||Apple Part Number|
I'm not sure what type of EEPROMS are compatible, and how the image needs to be split across the 4 chips. The ROM chips I'm attempting to replace are
I've tried looking around for previous attempts at this online, but haven't found any documentation about compatible EEPROMS or how to map the ROM file onto the 4 chips.