Return-Path: Delivered-To: craig@sbc-85.com Received: from gator4254.hostgator.com by gator4254.hostgator.com with LMTP id wPORN9RpxGIwuQ0AcizydQ (envelope-from ) for ; Tue, 05 Jul 2022 11:41:56 -0500 Return-path: Envelope-to: craig@sbc-85.com Delivery-date: Tue, 05 Jul 2022 11:41:56 -0500 Received: from mail-wr1-f54.google.com ([209.85.221.54]:39471) by gator4254.hostgator.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.95) (envelope-from ) id 1o8lcZ-0007OR-Tm for craig@sbc-85.com; Tue, 05 Jul 2022 11:41:56 -0500 Received: by mail-wr1-f54.google.com with SMTP id f2so13005731wrr.6 for ; Tue, 05 Jul 2022 09:41:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cpushack-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=BQbVavCptFowN2k0wX0te3vN9JxMo5h6/V8cthtwXLQ=; b=6BHNn62CI5k9Kha5YnyXmkYiX7l9d/e+aD7suFlzA7uj9Ybx12qSvqMi98fXq13rhz ETYyynvJf7Cc+VyHfoawVQ21i0nILiKki8oMO/sYAP8uVo/ujP4tovQRr3RklzfAtHpP AGCMk5vlRPOEB/o1JzSpxYc5gC3H4FN/5XykzWxvOB+IKwPpSJ/Mmj1kIWC7I7A/VTvS lb01m9yiXebXL6gPgNPoq8Q+JmRiCJpHkRRIVQ3kLzUxUul1ey04SkntnzbjkjR1hd8B +OUnViYppBos7qHY8OgZGyFRjEOlUfVYF2je2XUx215+eiRW2OfOTqwMcQF7dCrCcrcM I3HQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=BQbVavCptFowN2k0wX0te3vN9JxMo5h6/V8cthtwXLQ=; b=pRn9XXjbRPFdfk79DJg8767viwrrk/42deIBjJ7sDwMz7EBM69yMzlSgOyzrvk5sMN cXycmI9r0tplklZ6rxVgQdTagqYO1IBzuPDUa8R1/OCts1ehPsQozUgxFBkWTVRqm5s3 DUDLw/XIUZnj/6N1SqrSZNybpsM/NZzpxahF4XHw9pnGtMKNRUFle0+Czy6RaOAnvzoD I264i+/G0LgE9VKH4LTclH6IWNnCNsBq4VTjpkm0vyr7L6aSCdhSM16xODePfGKqqM+B op/8AcNuqXeSEwc5IcXMPAs7p2MEq2MWRRxiqrOIdTASvIE4k3ZaZE7BHJSen0qPLvUr k0RQ== X-Gm-Message-State: AJIora9uOBETSliEBdR3oRdH4WCpAsg/IgScMD+IXnF/wL6qagf2528Q 8GFTuqCZonWhyxtjyOpfc/xRv1GwyIqbYbHNALLv3eqM0R4= X-Google-Smtp-Source: AGRyM1vWnRj/TGlEdXuMMlaaehgRT+lR7h9G5JpWL0EIp7J9LzSFG98qRazxhWwRdA4YY5PEeGYGI8ymTKHSwul6IuE= X-Received: by 2002:adf:fa8f:0:b0:21b:9811:43e7 with SMTP id h15-20020adffa8f000000b0021b981143e7mr35839279wrr.275.1657039303026; Tue, 05 Jul 2022 09:41:43 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: John Culver Date: Tue, 5 Jul 2022 09:41:32 -0700 Message-ID: Subject: Re: Bubble kits To: SBC-85 Content-Type: multipart/alternative; boundary="00000000000009437205e3118744" X-Spam-Status: No, score=-0.5 X-Spam-Score: -4 X-Spam-Bar: / X-Spam-Flag: NO --00000000000009437205e3118744 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable yup all good, Intel didnt 'make' many 2704s and I havent seen one that isnt a 2708 die, I really doubt they MADE a separate die for one, and likely only made the 2704 to deal with lower then wanted yields of the 2708 die There wasnt a huge marker for a 4k EPROM, and not many others mae them (Intersil/Harris did but in different configurations) John Culver Curator The CPU Shack Museum john@cpushack.com www.cpushack.com On Tue, Jul 5, 2022 at 2:19 AM SBC-85 wrote: > Hi John > > Thanks for the feedback on tindie, I hope you are having fun with the > bubbles > > Quick question.=E2=80=94Have you ever seen an intel 2704 that wasn=E2=80= =99t actually a > 2708 die? Did intel ever make a 2704 die do you think? > > > Regards > > Craig > > > > On Jun 20, 2022, at 11:40 AM, John Culver wrote: > > =EF=BB=BF > Yup came in good condition > all 5 of them had memtech branded 7110s (was half expecting an Intel to > show up in one of them haha) > The scope I have works well for analysis but I dont have a camera set up > for it unfortunately > I'll have to figure out feedback on tindie lol was my first time using it > the 3870 is a neat chips, I should write something on it sometime, pretty > much a Microcontroller version of the F8, and they made a UV-EPROM based > one too. the 3870 turned out to be very popular in Euro telecoms, being > made by Telefunken a lot (and tons by Mostek/SGS too) > John Culver > Curator > The CPU Shack Museum > john@cpushack.com > www.cpushack.com > > > On Sun, Jun 19, 2022 at 9:57 AM SBC-85 wrote: > >> Hi John >> >> It looks like these bubble kits have been delivered. Please let me know >> if there are any issues. Positive feedback on tindie would be appreciat= ed >> >> Regards >> >> Craig >> >> > On Jun 16, 2022, at 4:46 PM, John Culver wrote: >> > >> > =EF=BB=BFThanks! Some are for my friends. I am a collector so like ol= d >> processors and related things. I run cpushack.com if ya want to check it >> out >> > >> > Sent from my iPhone >> > >> >> On Jun 16, 2022, at 1:34 PM, SBC-85 wrote: >> >> >> >> =EF=BB=BFHi John, I will box these bubble kits up and take to the pos= t office >> tomorrow. If I may ask, what do you plan on doing with these? Not exac= tly >> a hot market for bubbles, I think my SBC-85 bubble board is the only >> current thing that utilizes these. Since these have been sealed, I can= =E2=80=99t >> imagine there would be any problems with the seed bubble. >> >> >> >> Do you have any intel 4 bit or early 8 bit you are interested in >> trading? I am looking for pro-log 04/40 and 8008. >> >> >> >> Regards >> >> >> >> Craig >> >> --00000000000009437205e3118744 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
yup all good,
Intel didnt=C2=A0'make' many 270= 4s and I havent seen one that isnt a 2708 die, I really doubt they MADE a s= eparate die for one, and likely only made the 2704 to deal with lower then = wanted yields of the 2708 die
There wasnt a huge marker for a 4k = EPROM, and not many others mae them (Intersil/Harris did but in different c= onfigurations)

John Culver
CuratorThe CPU Shack Museum
john@cpushack.com
www.cpushack.com


On Tue, Jul 5, 2022 = at 2:19 AM SBC-85 <craig@sbc-85.com<= /a>> wrote:
<= div dir=3D"auto">
Hi John

Thanks for the feedback on tindie, I= hope you are having fun with the bubbles

<= div dir=3D"ltr">Quick question.=E2=80=94Have you ever seen an intel 2704 th= at wasn=E2=80=99t actually a 2708 die?=C2=A0 Did intel ever make a 2704 die= do you think?


<= div dir=3D"ltr">Regards

Cr= aig


=EF=BB=BF
Yup came in good condition
all 5= of them had memtech branded 7110s (was half expecting an Intel to show up = in one of them haha)
The scope I have works well for analysis but= I dont have a camera set up for it unfortunately
I'll have t= o figure out feedback on tindie lol was my first time using it
th= e 3870 is a neat chips, I should write something on it sometime, pretty muc= h a Microcontroller version of the F8, and they made a UV-EPROM based one t= oo.=C2=A0 the 3870 turned out to be very popular in Euro telecoms, being ma= de by Telefunken a lot (and tons by Mostek/SGS too)
<= div dir=3D"ltr">John Culver
Curator
The CPU Shack Museum
john@cpushack.com
www.cpushack.com


On Sun, Jun 19, 2022 at 9:57 AM SBC-85 <craig@sbc-85.com> wrote:
Hi John

It looks like these bubble kits have been delivered. Please let me know if = there are any issues.=C2=A0 Positive feedback on tindie would be appreciate= d

Regards

Craig

> On Jun 16, 2022, at 4:46 PM, John Culver <john@cpushack.com> wrote:
>
> =EF=BB=BFThanks!=C2=A0 Some are for my friends. I am a collector so li= ke old processors and related things. I run cpushack.com if ya want to check = it out
>
> Sent from my iPhone
>
>> On Jun 16, 2022, at 1:34 PM, SBC-85 <craig@sbc-85.com> wrote:
>>
>> =EF=BB=BFHi John, I will box these bubble kits up and take to the = post office tomorrow.=C2=A0 If I may ask, what do you plan on doing with th= ese?=C2=A0 Not exactly a hot market for bubbles, I think my SBC-85 bubble b= oard is the only current thing that utilizes these. Since these have been s= ealed, I can=E2=80=99t imagine there would be any problems with the seed bu= bble.
>>
>> Do you have any intel 4 bit or early 8 bit you are interested in t= rading?=C2=A0 I am looking for pro-log 04/40 and 8008.=C2=A0
>>
>> Regards
>>
>> Craig

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