In a message dated 1/30/03 11:23:20 AM, [EMAIL PROTECTED] writes: << ... On the 8500/8600 the ROM chips are on the underside of the board. On the 9500/9600 they are on top of the board. The ROM chips are four chips 1.1" X .5" with 22 pins on each long edge, 44 pins total per chip ... >>
There are two 9500s: 1) Tsunami, and 2) Tsunami w/ROM. (1) has no soldered ROMs but has a ROM-SIMM instead, and that ROM-SIMM has eight devices. (2) has soldered ROMs, and does indeed have four devices. The mother of all of them is the Windsurfer mobo, and some of the debugging test points are extant on the Tsunami and later machines. The Windsurfer used a discrete delay line; the Tsunami and later mobos used a "printed" delay line ... IOW, a "very long" trace which simulates the effect of a delay. -- 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
