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Re: [N8VEM-S100:4010] Re: ALTAIR/IMSAI 8080 CPU replacement board & FP-Mini Front panel
We could get the following prices if ordering higher multiples from
mouser:
M2012TNW03-EC $3.10/100 $2.99/200 $2.77/500
M2012TNW03-EG $3.10/100 $2.99/200 $2.77/500
M2018TNW03-EC $3.90/100 $3.76/200 $3.49/500
M2018TNW03-EG $3.90/100 $3.76/200 $3.49/500
NKK also has paddle toggles available in different colors as well.
I'd be willing to purchase in quantity if we get enough interest.
Todd
* Don Caprio <cap...@uxpro.com> [140607 03:49]:
> Oh, Even better. Price is for Qty two and they come with mounting hardware.
>
>
>
> On Sat, Jun 7, 2014 at 12:45 AM, Don Caprio <cap...@uxpro.com> wrote:
>
> > Yes Andrew those like like could work. We would also need the momentary on
> > as well.
> >
> > Last time I priced them:
> >
> > A Complete set:
> > 8 M2012TNW03-EC, On-NONE-ON RED $4.80 $38.40 $33.04
> > 8 M2012TNW03-EG, ON-NONE-ON BLUE $4.80 $38.40 $33.04
> > 2 M2018TNW03-EC, (ON)-OFF-(ON) RED $6.05 $12.10
> > 3 M2018TNW03-EG, (ON)-OFF-(ON) BLUE $6.05 $18.15
> >
> >
> >
> > On Fri, Jun 6, 2014 at 11:41 PM, Andrew Bingham <abin...@gmail.com>
> > wrote:
> >
> >> Don - would these work? If we didn't care so much about the color?
> >>
> >>
> >> http://www.electronicsurplus.com/Item/2111/JBT%20-%20Switch_%20rocker_%20SPDT-5A_%20Package%20of%202_%20-%203-532/
> >>
> >> Andrew B
> >>
> >>
> >> On Friday, June 6, 2014 9:53:14 PM UTC-7, Don Caprio wrote:
> >>
> >>> Josh, Rich, and S-100 gang,
> >>>
> >>> The Imsai front panel S-100 (aka fp-mini) was stalled for quite some
> >>> time. Family, work and
> >>> remodel project left no spare time.
> >>>
> >>> Looks like we have new life on the project. Many, many thanks to Josh
> >>> who got one of prototype
> >>> boards and worked out the final bugs. Looks like The next prototype
> >>> should be our last before
> >>> production run.
> >>>
> >>> This board is a bit pricey due to the cost of the mini paddle switches.
> >>> A completed set of paddle
> >>> switches goes for ~ $125.00. My source for the toggles left the company
> >>> so I'm finding a new
> >>> contact and pricing.
> >>>
> >>> The FP-Mini and Josh's new 8080 board is going to make a fantastic, two
> >>> board complete system.
> >>>
> >>> I'm working with a local sheet metal fabricator on a mini-chassis based
> >>> around the fp-mini and the
> >>> S-100 8 slot mother board. I needed a chassis design for the next board
> >>> layout. We'll need to move
> >>> switches around and provide mounting holes on the PCB. Anyone who has
> >>> ideas or experience
> >>> creating a photo mask for the Plexiglas section drop me a line. It may
> >>> be as simple as printing a
> >>> transparency on a laser printer.
> >>>
> >>> Once I get a final price on the chassis I'll send out a notice to see
> >>> who's
> >>> interested. The more we order the cheaper they are. I've mocked up a
> >>> prototype of the chassis
> >>> for your review and comments.
> >>>
> >>> Thanks.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> On 06/ 6/14 07:55 AM, Crusty OMO wrote:
> >>>
> >>> Thanks John,
> >>>
> >>> Andrew,
> >>>
> >>> That would be great if you could do a fill on the area around the
> >>> regulator, or perhaps walk me through it? The other error about pads being
> >>> next to each other doesn't matter, I just over rule the computer's
> >>> objection.
> >>>
> >>> Cheers,
> >>> Josh
> >>>
> >>>
> >>> ------------------------------
> >>> From: mon...@vitasoft.org
> >>> To: n8ve...@googlegroups.com
> >>>
> >>> Subject: RE: [N8VEM-S100:3991] ALTAIR/IMSAI 8080 CPU replacement board
> >>> Date: Thu, 5 Jun 2014 21:26:15 -0700
> >>>
> >>> Josh, Andrew may be able to brush it up. He is a marvel at that these
> >>> things
> >>>
> >>> John
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> *From:* n8ve...@googlegroups.com [mailto:n....@googlegroups.com] *On
> >>> Behalf Of *Crusty OMO
> >>>
> >>> *Sent:* Thursday, June 5, 2014 8:29 PM
> >>> *To:* n8ve...@googlegroups.com
> >>>
> >>> *Subject:* RE: [N8VEM-S100:3990] ALTAIR/IMSAI 8080 CPU replacement board
> >>>
> >>>
> >>>
> >>> Hi John,
> >>>
> >>> I uploaded the board, schematic(s), gerber files and firmware file to
> >>> the Wiki site.
> >>> Look in
> >>> Board Information, S-100 boards, S-100 ALTAIR-IMSAI 8080 CPU Board
> >>>
> >>> The DRC produces 2 errors which I don't know how to suppress.
> >>> 1 error is a drill pad next to a mounting pad for the SD card, I
> >>> oversized the pads and they overlap. Neither pad is an active pin or
> >>> conductor, the drill is just a pilot hole to position the SD card socket,
> >>> the pad is just to solder the body of the socket.
> >>> The other error(s) are from a bunch of traces I dumped around the
> >>> voltage regulator to act as some extra heat sink. I should really do a
> >>> "fill" in that area, but I don't know how and it's just easier for me to
> >>> zig zag some wide traces to do the job. I ignore the errors, the gerber
> >>> files look good.
> >>>
> >>> The firmware file is just a modification of my 8080 monitor program.
> >>> It's been modified to use the 8250 UART's, and it also has the start of the
> >>> SPI/SD card interface. I only got as far as receiving the 0x01 status byte
> >>> from the SD card, which means it initialized successfully and I am able to
> >>> talk to it. In the weeks to come, I'll return to working on the firmware
> >>> to get it to boot CP/M from the SD card. But first, I must make some
> >>> progress with my ELF projects.
> >>>
> >>> Cheers,
> >>> Josh Bensadon
> >>>
> >>>
> >>>
> >>> ------------------------------
> >>>
> >>> From: mon...@vitasoft.org
> >>> To: n8ve...@googlegroups.com
> >>>
> >>> Subject: RE: [N8VEM-S100:3982] ALTAIR/IMSAI 8080 CPU replacement board
> >>> Date: Thu, 5 Jun 2014 09:20:20 -0700
> >>>
> >>> Josh, great work – you must have a lot of time on your hands!
> >>>
> >>> Could you put me down for 2 boards.
> >>>
> >>> Also could you point me to the most current schematic/board diagram
> >>>
> >>> Thanks
> >>>
> >>> John
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> *From:* n8ve...@googlegroups.com [mailto:n....@googlegroups.com] *On
> >>> Behalf Of *Crusty OMO
> >>>
> >>> *Sent:* Wednesday, June 4, 2014 7:20 PM
> >>> *To:* n8ve...@googlegroups.com
> >>>
> >>> *Subject:* RE: [N8VEM-S100:3964] ALTAIR/IMSAI 8080 CPU replacement board
> >>>
> >>>
> >>>
> >>> Hi Guys,
> >>>
> >>> Well I'm finally done laying out this board. The autorouter only
> >>> produced swiss cheese with over 900 via's. It looked terrible!
> >>> Anyway, I scrapped everything the autorouter did initially, and
> >>> proceeded to layout the traces manually. Once I got what I thought was all
> >>> the hard parts done, I let the autorouter have another go at it. Again it
> >>> did not work out so well and it was unable to complete the board, so I
> >>> proceeded to undo it's changes and/or improve it's routing manually. I
> >>> squeezed those traces in there tight, any tighter and they'll be popping
> >>> off the board. Anyway, I'm working on the silkscreen layer and ready to do
> >>> a run.
> >>> Here's a picture of the board layout....
> >>> You can see the serial port connections on the top left, SD card to the
> >>> right of the 27C256 EPROM, parallel ports next to that and the ALTAIR and
> >>> IMSAI front panel connectors. There are also a few jumpers around the
> >>> board to configure for CPU or Peripheral board only and ALTAIR/IMSAI mode.
> >>> Firmware for the board will be my next project, but I have to make
> >>> preparations for VCF-MW my priority. Dave Ruske and I will be doing a
> >>> COSMAC 1802 exhibit there in September.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> Cheers,
> >>> Josh Bensadon
> >>>
> >>>
> >>>
> >>>
> >>> ------------------------------
> >>>
> >>> From: cru...@hotmail.com
> >>> To: n8ve...@googlegroups.com
> >>>
> >>> Subject: RE: [N8VEM-S100:3711] ALTAIR/IMSAI 8080 CPU replacement board
> >>> Date: Sun, 18 May 2014 00:57:20 +0000
> >>>
> >>> Hi Guys,
> >>>
> >>> Well, this project has just reached a milestone. The hardware is tested
> >>> and working. I had some rewiring to do to make it work for the ALTAIR, I
> >>> thought the ALTAIR and IMSAI front panels were (near) identical, but they
> >>> are not.
> >>> There are some jumpers on the board to configure between ALTAIR and
> >>> IMSAI.
> >>>
> >>> Here's a picture of my debugging and testing setup. The board is being
> >>> tested in the ALTAIR.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> Now entering Phase 2... building a PCB.
> >>>
> >>> Cheers,
> >>> Josh Bensadon
> >>> ------------------------------
> >>>
> >>> From: mon...@vitasoft.org
> >>> To: n8ve...@googlegroups.com
> >>>
> >>> Subject: RE: [N8VEM-S100:3666] ALTAIR/IMSAI 8080 CPU replacement board
> >>> Date: Tue, 13 May 2014 13:56:05 -0700
> >>>
> >>> Very nice Josh!
> >>>
> >>> John
> >>>
> >>>
> >>>
> >>> *From:* n8ve...@googlegroups.com [mailto:n....@googlegroups.com] *On
> >>> Behalf Of *Crusty OMO
> >>>
> >>> *Sent:* Tuesday, May 13, 2014 1:19 PM
> >>> *To:* n8ve...@googlegroups.com
> >>>
> >>> *Subject:* RE: [N8VEM-S100:3664] ALTAIR/IMSAI 8080 CPU replacement board
> >>>
> >>>
> >>>
> >>> Hi Group,
> >>>
> >>> Well, I'm cooking up this board at the moment. I have all the hardware
> >>> figured out to run like the original CPU boards.
> >>> I need to do a little more testing of the hardware, then I'll proceed to
> >>> building the boards.
> >>> The Memory, I/O, UARTs and SPI interface to the SD card appear to all be
> >>> working.
> >>> 8K chunks of memory can become either ROM, RAM or mapped off the board.
> >>>
> >>> CPU: 8080A
> >>> UARTS: 2x 8250
> >>> RAM: 2x 32K
> >>> ROM: 32K
> >>> I/O: 8 input, 6 output pins
> >>> SPI to SD Card interface
> >>> ALTAIR & IMSAI Front Panel Connectors.
> >>>
> >>> Where ROM is selected in a block it overlaps the RAM on reads, but
> >>> writes go through to RAM.
> >>> The ROM can then be disabled and reads will come from the RAM at that
> >>> location.
> >>> The firmware is copying itself to RAM then switching off the ROM.
> >>> The CPU can be deselected with jumpers and the board will work as
> >>> RAM/ROM and I/O for another CPU on the bus.
> >>>
> >>> Pictures attached. Yellow-Data, Brown-Address, Blue-I/O,
> >>> Green-Control/Status & everything else.
> >>>
> >>> Regards,
> >>> Josh Bensadon
> >>>
> >>>
> >>>
> >>>
> >>> --
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> >>>
> >>> --
> >>> Don Caprio...@gmail.com
> >>>
> >>> --
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> >>
> >
> >
> >
> > --
> > -------------------------------
> > Don Caprio cap...@uxpro.com
> > http://www.uxpro.com
> > (925) 240-UNIX
> >
>
>
>
> --
> -------------------------------
> Don Caprio cap...@uxpro.com
> http://www.uxpro.com
> (925) 240-UNIX
>
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