Return-Path: Delivered-To: craig@sbc-85.com Received: from gator4254.hostgator.com by gator4254.hostgator.com with LMTP id sD5nO3iQqGehFwYAcizydQ (envelope-from ) for ; Sun, 09 Feb 2025 05:24:40 -0600 Return-path: Envelope-to: craig@sbc-85.com Delivery-date: Sun, 09 Feb 2025 05:24:41 -0600 Received: from mail-wm1-f54.google.com ([209.85.128.54]:51393) by gator4254.hostgator.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96.2) (envelope-from ) id 1th5QW-001gE9-1m for craig@sbc-85.com; Sun, 09 Feb 2025 05:24:40 -0600 Received: by mail-wm1-f54.google.com with SMTP id 5b1f17b1804b1-43621d27adeso22773465e9.2 for ; Sun, 09 Feb 2025 03:24:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1739100269; x=1739705069; darn=sbc-85.com; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=rJzqWFGlvUPGyLdUn+74go2JhUK5eXC0IoLNZL9mK5A=; b=a7qHLhOem+uaTkY1I2WgW0SYKmFFummLj9a8TUf9/MPxcKYV8MOm5c9d1JHlJViq1X l30VFKDylrWjJOYkyO0ZlDied0wguUnMKD8GTVTRI5qMrKP1PE5w1BFzgJ9Lk6rOTMUU TRpu3H8GK0eHW3xrz9s6BhwjbkZ8DMVi7fBirV8dEeglMfEjrDmzzOXxJmMUNmBUGKMG VJc5UpSvhjqnv+buCqxWXfotWPfm+gwDcGpAR9AXKPN6SuetdmdfX+FDudnljIR6+DXT Jyk+7LRC7gX2xTxE8NbnH8fv5m7F3LArQ/VY5l4YbLiA+vxpkDFLmud15Sy9wC30L+ZL s/CA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739100269; x=1739705069; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=rJzqWFGlvUPGyLdUn+74go2JhUK5eXC0IoLNZL9mK5A=; b=BzoNcLcOp+3dVYfB2/wDj7FRHBoAiiAwE1jFk778Cpyt8wEE+lgBxhNESOhKGj9rY8 vixzuEm+W7WGb6kKa+AiRHfoWneHfapf0leT1bhTFUTFxATli72NTSyNfs0aYygeDrUd /r+utTHtV/8m1dYSUOn6vc49l5yNowVe9FXbd5jTBmbLGch3EpYKEsM7PwGeGysHzQDP UnFsvbfQlG+O+4x+AdcUWoMuyTskC1HoDJtWyVV9wT5ZYmZhfxtBxzcNXP3PGQtCznZr 4PMv08L9R2/eG/4Cer5upSxfQOktboFsRFPNXXQ0WAZcjAG4YwXA2AXm1iBohJthwV2b KI5Q== X-Gm-Message-State: AOJu0YwlWsQem6QygmqRMRzvy5gSi0O9Cgb9v/BtPJzN92yOVoM74wto uJH71//0Z5V8Ki/fw+Tr7y0HpvUbPtYRDomIIMmXgbxiAHpmvxcXiWdJTaow6Q0jphrfzBrpnQ+ B14qjgMFlOGc0fLzYrQHb588U/IoybWtm X-Gm-Gg: ASbGnct8kPeQO6e8khaLNSvTMsQOnIlP+Ufxt60rs2WFAH36Nu+F+Vosx/BxBsPDI5K yE8yv4TGUXLk66eaMQWOsUlriQ8AvmPTm/SqrrDDO0yfuFnBOkkKr4hHT2IBSL0kCXHb6uaWj X-Google-Smtp-Source: AGHT+IE7NGPDJHA9Yn1R+GzYaAUTjnw4F3UiLzJe6yfYEzIPY1OXzf6D6x2SxTNEQvFINBfGM3qTnnQC7ZjMCl0PIrc= X-Received: by 2002:a05:6000:2cd:b0:38d:db7b:5d90 with SMTP id ffacd0b85a97d-38ddb7b6068mr1457219f8f.41.1739100268584; Sun, 09 Feb 2025 03:24:28 -0800 (PST) MIME-Version: 1.0 References: <559EA40D-8453-41F0-9944-99E322BD2277@sbc-85.com> <1eba01db79ba$9813e440$c83bacc0$@sbc-85.com> In-Reply-To: <1eba01db79ba$9813e440$c83bacc0$@sbc-85.com> From: Jon Hales Date: Sun, 9 Feb 2025 11:24:17 +0000 X-Gm-Features: AWEUYZmCzQRwR4w0Q0s1CiswWSuG3IhXsUgr8ktF-IZb6cGgSVIZFtgQoJWreCY Message-ID: Subject: Re: Intel MDS-SIM-100 documentation To: craig@sbc-85.com Content-Type: multipart/alternative; boundary="000000000000bce72b062db3d523" X-Spam-Status: No, score=-3.9 X-Spam-Score: -38 X-Spam-Bar: --- X-Spam-Flag: NO --000000000000bce72b062db3d523 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Craig The information doesn't seem to be in the 1975 Data Catalog. I wonder whether Patrick Wong at Northwest technical might have some documentation. I believe Dwight Elvey was working at Intel on the multibus bit-slice floppy controllers around that time, and the group in which he worked may have had uses for the ROM-SIM for their development efforts. Regards Jon On Fri, 7 Feb 2025 at 23:47, wrote: > Hi Jon, > > Thanks for the information. I think the cut sheets you sent were from th= e > 76 catalog, I have attached one from the 77 catalog which has a little mo= re > information. I have the board, but no buffer/cable module. I think that > module is strictly bus transceivers and maybe only minimal glue logic. I= t > also allows the system to swap between the different PROM pinouts and > spread the available 1K across multiple PROMs. I think I can reverse > engineer the board enough to get it going, but there are some things I > don=E2=80=99t understand about its configuration. I have never seen the = adapter > modules in the wild, so I will probably have to make something from scrat= ch > to do 4x 1702s or a 2708. > > > > I will ask the intel group as a whole, but I wanted to check with you > first. > > > > Regards > > craig > > > > *From:* Jon Hales > *Sent:* Friday, February 7, 2025 1:36 PM > *To:* SBC-85 > *Subject:* Re: Intel MDS-SIM-100 documentation > > > > Hi Craig > > > > Mark Ogden has a document with photos of the SIM-101, SIM-102 and SIM-104= . > There is no reference/product code, which suggests it was an early produc= t. > > > > A quick search produced a reference on > joe.classiccmp/org//multibus/multibus.html. This includes a photo and > includes the text "uses 4 x 8 Intel P3106A ICs". > > > > And a recent eBay.com auction - attached. > > > > I'll ask Martyn Vale when he calls in tomorrow (his two Lotus cars are > serviced at a place beyond where I live, so he drops in from time to time= ). > > > > By coincidence, I noticed an unbuilt board for a ROM simulator among othe= r > unbuilt boards I have - a board that connects to the ROM socket and allow= s > for the code to be held in RAM. The board I have is by 'MyGeekyHobby', wh= o > documents it on Github and also shows the projects for which other people > have used the device. But this is for 28-pin EPROMs. > > > > Hopefully, I'll have more tomorrow if Martyn knows more than I do. > > > > Regards > > > > Jon > > > > On Fri, 7 Feb 2025 at 17:51, SBC-85 wrote: > > Hi Jon > > In about =E2=80=9876, intel offered a multibus card that simulated a ROM.= It had > 1k onboard and cables to plug into a project ROM socket. It is listed i= n > many MDS data sheets as ROM simulator as an optional upgrade. > Have you seen any documentation on these? There was a little off board > module (like the ICE modules) that contained drivers and adapted the cabl= es > for different ROMs. Have you ever seen the board in that adapter? > > Regards > Craig > > --000000000000bce72b062db3d523 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Craig

The information doesn't se= em to be in the 1975 Data Catalog.

I wonder whethe= r Patrick Wong at Northwest technical might have some documentation. I beli= eve Dwight Elvey was working at Intel on the multibus bit-slice floppy cont= rollers around that time, and the group in which he worked may have had use= s for the ROM-SIM for their development efforts.

R= egards

Jon

On Fri, 7 Fe= b 2025 at 23:47, <craig@sbc-85.com> wrote:

Hi Jon,

Thanks for the i= nformation.=C2=A0 I think the cut sheets you sent were from the 76 catalog,= I have attached one from the 77 catalog which has a little more informatio= n.=C2=A0 I have the board, but no buffer/cable module.=C2=A0 I think that m= odule is strictly bus transceivers and maybe only minimal glue logic.=C2=A0= It also allows the system to swap between the different PROM pinouts and s= pread the available 1K across multiple PROMs.=C2=A0 I think I can reverse e= ngineer the board enough to get it going, but there are some things I don= =E2=80=99t understand about its configuration.=C2=A0 I have never seen the = adapter modules in the wild, so I will probably have to make something from= scratch to do 4x 1702s or a 2708.=C2=A0

=C2=A0

I will ask the inte= l group as a whole, but I wanted to check with you first.

=C2=A0<= u>

Rega= rds

craig

=C2=A0

From: Jon Hales <jonhales@gmail.com>
Sent:= Friday, February 7, 2025 1:36 PM
To: SBC-85 <craig@sbc-85.com>
Su= bject: Re: Intel MDS-SIM-100 documentation

=C2=A0

Hi Craig

=C2=A0

Mark Ogden has a document with photo= s of the SIM-101, SIM-102 and SIM-104. There is no reference/product code, = which suggests it was an early product.

=C2=A0

A= quick search produced a reference on joe.classiccmp/org//multibus/multibus= .html. This includes a photo and includes the text "uses 4 x 8 Intel P= 3106A ICs".

= =C2=A0

And a recent eBay.com au= ction - attached.

=C2=A0

I'll ask Martyn Val= e when he calls in tomorrow (his two Lotus cars are serviced at a place bey= ond where I live, so he drops in from time to time).

=C2=A0

By coincidence, I noticed an unbuilt board for a ROM simulator = among other unbuilt boards I have - a board that connects to the ROM socket= and allows for the code to be held in RAM. The board I have is by 'MyG= eekyHobby', who documents it on Github and also shows the projects for = which other people have used the device. But this is for 28-pin EPROMs.<= /u>

=C2=A0

Hopefully, I'll have more tomorrow if Ma= rtyn knows more than I do.

=C2=A0

Regards=

=C2=A0

=

Jon

=C2=A0

On Fri, 7= Feb 2025 at 17:51, SBC-85 <craig@sbc-85.com> wrote:

Hi Jon

In about =E2=80=9876, = intel offered a multibus card that simulated a ROM.=C2=A0 It had 1k onboard= and cables to plug into a project ROM socket.=C2=A0 =C2=A0It is listed in = many MDS data sheets as ROM simulator as an optional upgrade.
Have you = seen any documentation on these? There was a little off board module (like = the ICE modules) that contained drivers and adapted the cables for differen= t ROMs.=C2=A0 Have you ever seen the board in that adapter?

Regards<= br>Craig

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