Re: Memory Expander


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Re: Memory Expander



The person that was making the 83 software is doing it.  THe EII has 512k
for $12.  The EII also interfaces with modems/Ir/Text LCD/and 3.5 disk
drive.

>I'm making it as much for fun as business, and why not make some
>competition for the EII and EII anyway? Also, I thought the person
>writing 83 software for EII stopped working on it. I don't know how much
>mine are going to cost, but the current estimated cost on mine is $35-$40
>for 32K including labor and stuff. The memory is pluggable and each extra
>32K will be about $5.
>Mine will be VERY expandable, its based on a Z80 CPU so a serial port,
>sound capabilities, a display maybe even a floppy drive could be added,
>although their usefulness is debatable. Also, a serial modem could be
>added.
>I am planning on using SRAM with backup batteries. To expand, the SRAM
>can be unplugged along with a backup battery. I am still considering
>using FLASH EEPROM because you wouldn't have to worry about backup
>batteries, of course that would be slow, and have limited life, not to
>mention a likely bulky power supply to give the 12V necessary to write to
>it.
>
>        Chris
>
>
>_____________________________________________________________________
>I'm, like, a product, OK, of american, you know, education, all right?
>DJ_Ramen@juno.com
>
>On Sun, 8 Mar 1998 20:27:53 -0500 The Pletchers
><bpspcp-travelin@WORLDNET.ATT.NET> writes:
>>Let him make it on his own if he wants I guess.
>>
>>At 03:50 PM 3/8/98 -0700, Grant Stockly wrote:
>>>Why would you make this when the EII is going to be out by the end of
>>the
>>>week?  The EIII (link menu transfers) will be in 2 weeks...
>>>
>>>Grant
>>>
>>>>First of all, look around at the kind of hardware other people are
>>using to
>>>>make their own expanders. If you cant think of a price on your own,
>>you'll
>>>>never make a good businessman (or Ferengi). I would really recommend
>>against
>>>>any kind of ram because it takes power. EEPROM is probably the best
>>way to
>>>>go. Look at other ideas from other people. Hmm. anythink over 1 or
>>two megs
>>>>is too much if you think about it. Use ASM for the transfers
>>probably. You
>>>>dont have to, but it sure beats the link menu.
>>>>
>>>>At 04:29 AM 3/9/98 -0500, Chris A Brainerd wrote:
>>>>>Hey,
>>>>>I've done lots and lots of research into building a memory
>>expander. I'm
>>>>>getting ready to build the prototype (witin a week), but I need to
>>know
>>>>>what people want.
>>>>>Specificly how much storage do you want and at what price? Also
>>would you
>>>>>want to pay extra to send and recieve with the link menu, or have
>>it be
>>>>>cheaper and use an assembly program for transfers. If you have any
>>>>>answers to any of these questions please email me.
>>>>>BTW: any amount of memory is possible from 0 all the way to 1GB,
>>believe
>>>>>it or not. Of course a 1GB expander would be ridiculously huge and
>>>>>expensive (the SRAM chips alone would be $36,250), not to mention
>>>>>pointless.
>>>>>
>>>>>I'm only planning on making 83 compatible software, but if there's
>>anyone
>>>>>out there who wants to work on making it 82, 85 or 86 compatible
>>email
>>>>>me.
>>>>>
>>>>>Chris
>>>>>_____________________________________________________________________
>>>>>I'm, like, a product, OK, of american, you know, education, all
>>right?
>>>>>DJ_Ramen@juno.com
>>>>>
>>>>>_____________________________________________________________________
>>>>>You don't need to buy Internet access to use free Internet e-mail.
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>>>>>
>>>>__________________________
>>>>
>>>>What is there to say about silence?
>>>>__________________________
>>>>Welcome to the U.S.S. Crew
>>>>-- http://www.jeffb.home.ml.org/
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>>>
>>__________________________
>>
>>What is there to say about silence?
>>__________________________
>>Welcome to the U.S.S. Crew
>>-- http://www.jeffb.home.ml.org/
>>-- http://www.geocities.com/Area51/Station/1149/
>>================================================
>>ICQ UIN (if you have ICQ)        -- 2097846
>>ICQ E-mail Express (if you dont) -- mailto:2097846@wwp.mirabilis.com
>>__________________________
>>
>
>_____________________________________________________________________
>You don't need to buy Internet access to use free Internet e-mail.
>Get completely free e-mail from Juno at http://www.juno.com
>Or call Juno at (800) 654-JUNO [654-5866]


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