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Re: Prime bitslice processor

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On Monday, January 23, 2023 at 2:05:07 AM UTC-5, Bob Allison wrote:
> On Sunday, July 11, 2021 at 9:24:39 PM UTC-4, Dennis Boone wrote: 
> > > Were the P300 and P400 ECL machines? I hadn't thought so. I have the 
> > > P300 microcode manual, and we once had the microcode boards for the P400 
> > > at Greater Clark County Schools. I remember looking at them, and I'm 
> > > pretty sure that's what I recall was used. 
> > No, pretty sure the first ECL machine was the 9950. 
> > > I have the data sheets for the 54181/74181 ALU in my 1976 (second 
> > > printing) Texas Instruments TTL Data Book. if they're not already 
> > > online somewhere, let me know, I'll scan the pages. 
> > Check http://bitsavers.org/components/ti/_dataBooks/ - I suspect 
> > it's in there. 
> > 
> > De
> Yes, the 9950 and all 9000s were ECL with the 2900 family of bit-slice chips. 
> There were 6 boards in the CPU: Execute Units E1 & E2, Instruction I-Unit, S-Unit (Cache), CS (Control Store), and MC (Memory Controller). 
> 
> The 6000 series was ECL with custom Prime-designed Motorola MCA 2500 ECL VLSI. 
> There were 6 boards in the CPU: the Execution Unit, Instruction/Cache Unit, Control Store, and Memory Controller with multiple VLSI designs on each of the 4 boards that made up the CPU. 
> 
> The next ECL CPU (The Lion project) was to be with the MCA 25000 VLSI, but that project was canceled after the takeover attempt and the buyout by JH Whitney and DR Holdings. 
> 
> The 5000 series was with custom Prime-designed CMOS from LSI Logic. The single processor variations had multiple chips for the complete CPU on one board plus slots for memory modules on the same board. The 5370 dual processor version had two sets of CPU chips and a new Memory Controller all on one board with a second board for all the memory modules. Those projects survived the takeover and the 5370 dual CPU was the last machine designed and shipped from Prime.

I really thought I remembered seeing the AM2900 in the microcode boards for the P400.

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Prime bitslice processor Jim Wilcoxson <prirun@gmail.com> - 2020-04-24 07:44 -0700
  Re: Prime bitslice processor drb@ihatespam.msu.edu (Dennis Boone) - 2020-04-24 11:04 -0500
  Re: Prime bitslice processor Bob Allison <bobbyallison@gmail.com> - 2020-10-21 19:12 -0700
    Re: Prime bitslice processor Daiyu Hurst <daiyu.hurst@gmail.com> - 2021-07-10 19:55 -0700
      Re: Prime bitslice processor drb@ihatespam.msu.edu (Dennis Boone) - 2021-07-11 20:24 -0500
        Re: Prime bitslice processor Daiyu Hurst <daiyu.hurst@gmail.com> - 2021-07-13 10:18 -0700
          Re: Prime bitslice processor drb@ihatespam.msu.edu (Dennis Boone) - 2021-07-13 20:18 -0500
        Re: Prime bitslice processor Bob Allison <bobbyallison@gmail.com> - 2023-01-22 22:50 -0800
        Re: Prime bitslice processor Bob Allison <bobbyallison@gmail.com> - 2023-01-22 22:55 -0800
        Re: Prime bitslice processor Bob Allison <bobbyallison@gmail.com> - 2023-01-22 23:05 -0800
          Re: Prime bitslice processor Daiyu Hurst <daiyu.hurst@gmail.com> - 2023-06-27 11:41 -0700
            Re: Prime bitslice processor drb@ihatespam.msu.edu (Dennis Boone) - 2023-06-28 02:01 +0000
              Re: Prime bitslice processor drb@ihatespam.msu.edu (Dennis Boone) - 2023-06-28 02:46 +0000

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