Date: Mon, 14 Jun 2004 10:55:16 -0400 From: Michael Shaw <[EMAIL PROTECTED]>
I'm furbishing up a 7300/180 that may or may not have a few pieces missing. On the motherboard there is an empty slot that has ROM printed beside it, looks like it takes a BIG DIMM at one end of the RAM sockets.
I have a Cache SIMM in place, and RAM, and VRAM, but the socket marked ROM at the extreme right side of the mobo when looking at the CPU from the front (its under the CD-ROM drive) is EMPTY !!!!
The computer works just fine and Apple System Profiler says that it knows that it is a 7300/180 so I'm wondering...
Where's the ROM if the ROM SIMM is not there and how can this thing work without it ?????
The ROM is soldered down. It is contained in four chips on the underside of the board. The four chips are approximately 1.1" X .5" with 22 pins down each long side. They should be labeled 341S0280 through 341S0283 or was that 343S?
The ROM slot is there for future upgrades that never happened. I built a few ROM DIMMs that use the Kansas ROMs and work in the 7200 through 9500, but the only advantage they convey is that needn't disable speculative processing with G3 upgrades.
Jeff Walther
-- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and...
Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! |
Support Low End Mac <http://lowendmac.com/lists/support.html>
PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/>
Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
