willing@EE.UCLA.EDU (Scott D. Willingham) (06/04/89)
Does anyone know whether the 520STFM is internally the same as a 1040STFM sans the 2nd bank of 512k memory? Specifically, are their spots on the motherboard for the 2nd memory bank? Also, is the internal drive double-sided? Thank You, Scott D. Willingham
perand@ttds.UUCP (Per Andersson) (06/04/89)
In article <8906032211.AA26555@ee.UCLA.EDU> willing@EE.UCLA.EDU (Scott D. Willingham) writes: > >Does anyone know whether the 520STFM is internally the same >as a 1040STFM sans the 2nd bank of 512k memory? Specifically, >are their spots on the motherboard for the 2nd memory bank? >Also, is the internal drive double-sided? > >Thank You, >Scott D. Willingham Yup, the newer one's are. You'll just have to check before you buy. I think that if it is originally has a 720KB drive, is is a stripped 1040. The only thing I was disappointed by is that it didn't have sockets for the second bank of RAM. The older STFM with single-sided drive is probably always the old motherboard, and should be avoided ( If you want to expand it ). Per -- WHOAMI : Per Andersson WHERE : Royal Institute of Technology, Stockholm, Sweden UUCP : {backbone}!sunic!ttds!perand SUNET : perand@admin.kth.se, perand@tds.kth.se
neil@cs.hw.ac.uk (Neil Forsyth) (06/05/89)
I have seen and heard of the following combinations of 520s: 1. NO internal drive, NO extra RAM provision, NO Blitter provision 2. Internal SS drive, extra RAM provision, NO Blitter provision 3. Internal SS drive, extra RAM provision, Blitter provision 4. Internal DS drive, extra RAM provision (surface mount), Blitter provision _____________________________________________________________________________ / DISCLAIMER: Unless otherwise stated, the above comments are entirely my own \ ! "So your father was a woman" - "No No ROMAN (crack) Argh!" - Monty Python ! ! ! ! Neil Forsyth JANET: neil@uk.ac.hw.cs ! ! Dept. of Computer Science ARPA: neil@cs.hw.ac.uk ! ! Heriot-Watt University UUCP: ..!ukc!cs.hw.ac.uk!neil ! ! Edinburgh ! ! Scotland ! \_____________________________________________________________________________/
ritchie@hpldola.HP.COM (Dave Ritchie) (06/05/89)
Does anyone have the details of adding the extra bank of memory to a 520STFM? I have a friend in the local user's group that want's to upgrade their STFM. Dave Ritchie
george@electro.UUCP (George Reimer) (06/06/89)
In article <8906032211.AA26555@ee.UCLA.EDU> willing@EE.UCLA.EDU (Scott D. Willingham) writes: > >Does anyone know whether the 520STFM is internally the same >as a 1040STFM sans the 2nd bank of 512k memory? Specifically, >are their spots on the motherboard for the 2nd memory bank? >Also, is the internal drive double-sided? > I carefully cleaned out the holes for the four chips, soldered in 4 sockets and then inserted the 256k x 4 drams mailed to me from IC Express, and volia! I had a 1040STfm! When I bought my 520, the dealer gave me an option of either one internal double sided drive or a two drive system , both single sided. Therefore a conclude that both single and double sided drives have been available in the 520STfm. George Reimer
john@stag.UUCP (John Stanley) (06/09/89)
[george@electro.UUCP (George Reimer) writes...] > > I carefully cleaned out the holes for the four chips, soldered > in 4 sockets and then inserted the 256k x 4 drams mailed to me > from IC Express, and volia! I had a 1040STfm! > It's amazing it was that simple... :^) Even more so when you realize it takes 16 x 256k (bit) chips to add 512K bytes of memory... == --- John Stanley <dynasoft!john@stag.UUCP> Software Consultant / Dynasoft Systems
tim@brspyr1.BRS.Com (Tim Northrup) (06/10/89)
From article by dynasoft!john@stag.UUCP (John Stanley): | [george@electro.UUCP (George Reimer) writes...] |> |> I carefully cleaned out the holes for the four chips, soldered |> in 4 sockets and then inserted the 256k x 4 drams mailed to me |> from IC Express, and volia! I had a 1040STfm! |> | | It's amazing it was that simple... :^) | | Even more so when you realize it takes 16 x 256k (bit) | chips to add 512K bytes of memory... == Read carefully --> 256k x 4!!!! chips --> 4 x 256k x 4 = 16 x 256k -- Tim -- Tim Northrup +------------------------------------------+ +---------------------------------+ GEnie: T.Northrup | UUCP: uunet!crdgw1!brspyr1!tim | Air Warrior: "Duke" | ARPA: tim@brspyr1.BRS.Com +------------------------------------------+
george@electro.UUCP (George Reimer) (06/13/89)
In article <0508891231500780@dynasoft.UUCP> dynasoft!john@stag.UUCP (John Stanley) writes: > Even more so when you realize it takes 16 x 256k (bit) >chips to add 512K bytes of memory... == > >--- >John Stanley <dynasoft!john@stag.UUCP> >Software Consultant / Dynasoft Systems I'm not quite sure whether you were being tongue N cheek, or genuinely happy for another megger or had just mis-read my posting. To make things clear though, the chips I mentioned are 262,144 bits deep by 4 bits wide. ( 256k x 4 ) Thus it only takes 4 of them to make up 512k of ram. They are currently being listed by about 5 or 6 manufacturers. And yes!!!!! It is great to be able to do with 4 chips what it used to take 16 chips to do. I looked around before going the route I did but did not find anyone who used the megabit chips for ST memory expansion. I would prefer these on the basis of power consumption, heat dissipation and less complexity. But not to let you think that things are perfect. One meg of ram does makes things easier and a LOT faster ( via ram disk based compiles ) but I have already found myself sighing.... ... if only I had just a little more ram...... 8^) George Reimer
john@stag.UUCP (John Stanley) (06/13/89)
[tim@brspyr1.BRS.Com (Tim Northrup) writes...] > From article by dynasoft!john@stag.UUCP (John Stanley): > | [george@electro.UUCP (George Reimer) writes...] > |> > |> I carefully cleaned out the holes for the four chips, soldered > |> in 4 sockets and then inserted the 256k x 4 drams mailed to me > |> from IC Express, and volia! I had a 1040STfm! > |> > | > | It's amazing it was that simple... :^) > | > | Even more so when you realize it takes 16 x 256k (bit) > | chips to add 512K bytes of memory... == > > Read carefully --> 256k x 4!!!! chips --> 4 x 256k x 4 = 16 x 256k Tim, how about if you "read carefully". See anything in his message that mentions 4 bit wide chips?? Nowhere in his message (or any previous msg I saw) had there been any indication that anyone has been using 256k x 4bit chips for ST memory expansion. All 512k memory upgrades I'd heard of (before this) for the 520 (including soldered-in ones) used 16 x (256k x 1bit) chips. If 4bit wide chips are useable (required?) on the newer ST's, that's fine, but he really should have mentioned he was using 4 bit wide chips. Anything else is misleading to novice users (and those uninformed about the change) which was the entire reason I posted my reply. For the record, I've been told by a couple of other people that 4 bit wide chips are now being used on some of the newer ST's so this may be the "new standard". On the other hand, I spoke to my local ST dealer about this and they were also surprised to hear about 4 bit wide chips being used in a 520. If this is common knowledge, it's somehow managed to bypass my corner of the universe which means it may cause confustion for other people as well... My msg was not seriously-critical twords George. That should have been obvious from the smiley face... He was leaving out some important piece of information and I just tried to make it obvious by my message. --- John Stanley <dynasoft!john@stag.UUCP> Software Consultant / Dynasoft Systems
pms@vicorp.UUCP (Peter Shirley) (06/15/89)
In article <0512891714000798@dynasoft.UUCP> dynasoft!john@stag.UUCP (John Stanley) writes: >[tim@brspyr1.BRS.Com (Tim Northrup) writes...] >> From article by dynasoft!john@stag.UUCP (John Stanley): >> | [george@electro.UUCP (George Reimer) writes...] >> |> >> |> I carefully cleaned out the holes for the four chips, soldered >> |> in 4 sockets and then inserted the 256k x 4 drams mailed to me >> |> from IC Express, and volia! I had a 1040STfm! >> |> >> | It's amazing it was that simple... :^) >> | >> | Even more so when you realize it takes 16 x 256k (bit) >> | chips to add 512K bytes of memory... == >> >> Read carefully --> 256k x 4!!!! chips --> 4 x 256k x 4 = 16 x 256k > > Tim, how about if you "read carefully". See anything in his message >that mentions 4 bit wide chips?? John, how about if . . . oh, never mind. My understanding of the phrase where George talks about "256k x 4 drams" was this: a 256k x 4 dram is a dram with 256k 4 bit wide words. This used to be a pretty common way to indicate how wide your memory chips are; has usage changed so much in the last few years? Insert smileys if there seems to be any edge on this posting - my base humanity just had to put in its two cents worth. -Peter "Barefoot and nostalgic." ------------------------------------------------------------------------------- Please excuse me - I have to go wrestle with inews. PPPPPPP MM MM SSSSSSS ! "You can't get truth, don't expect reliance P P M M M M S ! from a brand new lover or an old appliance" PPPPPPP M M M SSSSSSS ! -Seth Blair, P M M S ! _Appliance_Rock_ P M M SSSSSSS ! Opinions are my own, except the Seth quote. -------------------------------------------------------------------------------
harry@moncam.co.uk (Jangling Neck Nipper) (06/21/89)
In article <6033@brspyr1.BRS.Com>, tim@brspyr1.BRS.Com (Tim Northrup) writes: > Read carefully --> 256k x 4!!!! chips --> 4 x 256k x 4 = 16 x 256k Sorree, couldn't resist this... ((((4!)!)!)!) = (((24!)!)!) = ((6.2x10e23!)!) = prittey large.
schultzd@kira.uucp (David Schultz) (11/26/90)
A friend of mine is looking for a 520STfm (with built in double-sided drive). (Actually, I'd like one, too. I'm just too broke). Any way, he would prefer it to have the 1040 motherboard (the newer ones are like that). Anybody looking to sell. -- ----- David W. Schultz ----- ----- uunet!frith!schultzd ----- ----- Work Phone: (517)-353-8891 ----- -- "Since my opinions are mine, I won't tell you who I work for." --