Re: Memory Expander

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Re: Memory Expander

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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>>>__________________________
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>>>__________________________
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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
>__________________________
>

_____________________________________________________________________
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