On Apr 27, 2009, at 5:17 PM, Devin Glenn wrote:
> do you have a picture of it? >> >>> where is the ROM chip on the B&W? >> >> Its the very tiny "gull wing" package which is next to the CPU. The device is labeled "U37" and "ROM" in white lettering on the board. The device is more particularly described as: LH28E008BVT-BTL10 SHARP Japan From the above, we can conclude that it is an electrically reprogrammable (28E series) device with 8 MB capacity and a speed of 100 nS. It is probably "5 volt only". It can be reprogrammed from an application. However, as with most such devices, if the so-called "BOOT BLOCKS" (the first physical block within the device) is damaged, it cannot be reprogrammed because you cannot boot the Mac in order to do so. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
