< Laugh In >
V e r r r r y interesting . . .
< /Laugh In >
I can't get the url to work correctly, so enable the sidebar for the direct LC link or just whack the spacebar down to p.33 for the LC:
http://ftp.iinet.net.au/pub/apple/US/Macintosh/Utilities/memguide.pdf#page=33&zoom=auto,0,864
At a first guess, I'd say the LC is hobbled in hardware, not in ROM per received wisdom. Considering how memory mapping appears to be a moving target that's based upon the memory polled at startup for so many other systems, you may have a shot at it.
I'd buzz the connections for the SIMM slots to see which CAS and RAS lines are present there, but not implemented on the soldered memory pads.
A few jumper wires later and you just might have the world's first 16MB capable LC. [}
] ]'>
Take a look at the DevNote as well, for the Memory Controller ID and check that against other systems. Memguide curiously lacks mention how the bank selects are set up for the LC . . .
. . . as do some of the 4MB soldered to the MoBo hobbled systems . . . hrmmm? :?:
< . . . and my Quadras 700 & 950 have FOUR Bank Select lines! :O >
V e r r r r y interesting . . .
< /Laugh In >
I can't get the url to work correctly, so enable the sidebar for the direct LC link or just whack the spacebar down to p.33 for the LC:
http://ftp.iinet.net.au/pub/apple/US/Macintosh/Utilities/memguide.pdf#page=33&zoom=auto,0,864
At a first guess, I'd say the LC is hobbled in hardware, not in ROM per received wisdom. Considering how memory mapping appears to be a moving target that's based upon the memory polled at startup for so many other systems, you may have a shot at it.
I'd buzz the connections for the SIMM slots to see which CAS and RAS lines are present there, but not implemented on the soldered memory pads.
A few jumper wires later and you just might have the world's first 16MB capable LC. [}
] ]'>Take a look at the DevNote as well, for the Memory Controller ID and check that against other systems. Memguide curiously lacks mention how the bank selects are set up for the LC . . .
. . . as do some of the 4MB soldered to the MoBo hobbled systems . . . hrmmm? :?:
< . . . and my Quadras 700 & 950 have FOUR Bank Select lines! :O >