guelzow@ccu.umanitoba.ca (Andreas J. Guelzow) (06/25/91)
The LaserWriter LS manual indicates that its memory can be upgraded to 1 Meg (from 512 K). Does anybody know how this can be done without bringing the printer to an "auth. apple dealer". What kind of SIMMs are needed (I am hoping that the answer is: any of those old 256K Simms people have left over after upgrading their Mac Memory.) -- Andreas J. Guelzow <guelzow@ccu.umanitoba.ca> Department of Mathematics & Astronomy University of Manitoba
steveh@tasman.cc.utas.edu.au (Steven Howell) (06/25/91)
To upgrade a laserwrite LS from 512k to 1meg, simply plug into the spare DIP sockets 2x 44256 memory chips. these chips are the run of the mill 256k x4 bits memories. Once installed in their sockets, move the memory jumper select from .5M to 1M. and this would have upgraded the laserwriter to 1 meg... quite cheap actually. but make sure; the power is off you are using anti-static procedures the chips are installed with all pins into their respective sockets and their orientation is correct (notch to notch) you can fin these chips from virtually any electronic computer shop. they are used in the mac classic memory board, IBM vga cards etc.. steve h
steveh@tasman.cc.utas.edu.au (Steven Howell) (06/25/91)
steveh@tasman.cc.utas.edu.au (Steven Howell) writes: > To upgrade a laserwrite LS from 512k to 1meg, simply plug into the >spare DIP sockets 2x 44256 memory chips. these chips are the run of the mill ^ ^ ^ ^ arghhh! ITS NOT 2x 44256, i meant to say 4x 44256, also its best to use 80ns memories, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
userMLAB@mts.ucs.UAlberta.CA (Bob Bolt) (06/26/91)
In article <steveh.677842539@tasman>, steveh@tasman.cc.utas.edu.au (Steven Howell) writes: > To upgrade a laserwrite LS from 512k to 1meg, simply plug into the >spare DIP sockets 2x 44256 memory chips. these chips are the run of the mill >256k x4 bits memories. What will be gained by upgrading the memory of this printer. Will it increase printing speed? image quality? image size? If anyone has the answer, please spread the word. I have this printer and it is a tad slow. Hopefully, a memory upgrade will speed it up a little. Bob
ejb@think.com (Erik Bailey) (06/27/91)
In article <RN.1349@mts.ucs.UAlberta.CA> userMLAB@mts.ucs.UAlberta.CA (Bob Bolt) writes: >In article <steveh.677842539@tasman>, steveh@tasman.cc.utas.edu.au (Steven Howell) writes: >> To upgrade a laserwrite LS from 512k to 1meg, simply plug into the >>spare DIP sockets 2x 44256 memory chips. these chips are the run of the mill >>256k x4 bits memories. >What will be gained by upgrading the memory of this printer. Will >it increase printing speed? image quality? image size? If anyone >has the answer, please spread the word. I have this printer and >it is a tad slow. Hopefully, a memory upgrade will speed it up >a little. > >Bob So far as I know, adding memory to a LW LS will do absolutely nothing, unless you have a page that is just so unbelievable, amazingly, intricately complex that the built-in image compression algorithms fail to reduce it to 512K (what is in the printer). I have yet to see this happen. BTW -- the printer itself is quite quick for a 4ppm machine. Remember that it does its imaging ON THE HOST COMPUTER, not in the printer, so a Mac IIfx will print faster than a Mac Plus. --Erik -- Erik Bailey | 7 Oak Knoll | Thinking Machines Corp. ejb@think.com | Arlington, MA 02174 | 245 First St. harvard!think!ejb | (617) 643-0732 | Cambridge, MA 02142 /earth is 98% full. Please remove any excess inhabitants.
rdw89@ecs.soton.ac.uk (Williams RD) (06/27/91)
In <1991Jun26.192636.629@Think.COM> ejb@think.com (Erik Bailey) writes: >So far as I know, adding memory to a LW LS will do absolutely nothing, >unless you have a page that is just so unbelievable, amazingly, intricately >complex that the built-in image compression algorithms fail to reduce it to >512K (what is in the printer). I have yet to see this happen. Well, I know someone who has had 'out of memory' type problems with the LS, and he's only been using it for a month! Is there an 'official' Apple upgrade for the LS memory though? ______________________________________________________________________________ Richard Williams, | Department of Electronics and Computer Science, | Southampton University, | EMAIL ADDRESS: Highfield, | rdw89@ecs.soton.ac.uk Southampton. | ______________________________________________________________________________