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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I think that the Tandy computers all used
DRAM; the 4044 is a static memory chip.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Barry<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
sebhc-bounces@sebhc.org [mailto:sebhc-bounces@sebhc.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>davidwallace2000@comcast.net<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, August 14, 2006 3:17
PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">sebhc@sebhc.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [sebhc] memory for
the h-8</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>If I remember right, the 4044 static RAM used only +5V. (I could
be wrong -- I'm ten miles from the schematic at the moment.) But I
thought it was only the DRAM parts that used -5V.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>-------------- Original message -------------- <br>
From: "bill malcolm" <wm65805@hotmail.com> <o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi : my guess is the 64k chips could be made to work or even 256k ones
--- is could be an issue of supply voltages on the 16k sockets ( -5 volt) that
is not needed and must be changes. I converted my tandy model
1 back in the mid 1980's to use these chips. <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>bill<o:p></o:p></span></font></p>
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<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>----- Original Message ----- <o:p></o:p></span></font></p>
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<div style='font-color:black'>
<p class=MsoNormal style='background:#E4E4E4'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>From:</span></font></b><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:WVerish@aol.com" title="WVerish@aol.com">WVerish@aol.com</a> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>To:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:sebhc@sebhc.org" title="sebhc@sebhc.org">sebhc@sebhc.org</a> <o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Sent:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Sunday, August 13,
2006 7:11 PM<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Subject:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Re: [sebhc] memory
for the h-8<o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial id="role_document"><span
style='font-size:10.0pt;font-family:Arial;color:black'>Dear Carroll:<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>
I have a 16 k static RAM memory board that came with my H-8, but it is <strong><b><font
face=Arial><span style='font-family:Arial'>un-populated</span></font></b></strong>.
The chips required for it are TMS4044 chipsThey are 4096 by 1 bit. The computer
currently has only 8K of static RAM installed. This makes it very hard to write
any <u>real</u> BASIC programs due to the lack of string handling capability
with only B.H. BASIC instead of extended B.H. BASIC. I know that my 16K board
could probably work with other chips, but due to their cost I really can't
afford to make a mistake. Any ideas? <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Thanks,<o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2
color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'>Wayne</span></font></st1:place></st1:City><font size=2
color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'><o:p></o:p></span></font></p>
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