More memory on 7300
Darryl Baker
dpb at tellab5.UUCP
Tue May 3 08:17:25 AEST 1988
In article <132 at ssdis.UUCP> gsarff at ssdis.UUCP (gary sarff) writes:
+>In article <3645 at zodiac.UUCP>, jdevries at zodiac.ads.com (Jeff De Vries) writes:
+>> The standard 7300 comes with 0.5M using 64Kbit chips. I have been told
+>> that there is space (solder pads?) on the motherboard for another 0.5M
+>> using 64Kbit chips.
+>>
No, there is space for a total of 512k using 64kx1 chips or
2Meg using 256Kx1 chips.
+>I have heard this several times from people here, but I have opened my
+>unix-pc, (soon after I got it last summer) and it has 1 meg of ram and
+>there is space (solder pads) on the mother board for another set of chips.
+>I am pretty sure I am not mistaken, the chips say 41256 on them (can't
+>remember if they are 120ns or 150ns) and there are 36 of them. 4 rows
+>of 9 (making 256K with parity), when the system is booting it says
+>something like free memory 1048576. A friend in New York bought one
+>too and his also says this. But I remember reading the literature about
+>the 7300 years back and it did say 512K of ram with more on expander cards.
+>So what gives, do we have mutant 7300's? Are we using 3b1 motherboards,
+>(which I was told were slightly different)? We also have two fans, I have
+>heard some mention that their unixpc's have only 1.
Well, early 7300s had 512k then there was another option to have 1 Meg on the
mother board, finally AT&T anounced the 3b1(7300++) with 2Meg on the
motherboard and the hood scoop for a full height drive. As far as I know
only the 3B1s only have one fan.
One last note is there are several groups under unix-pc.(general,uucp,sources)
You might see if these are carried by your news host.
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