I have an extra til311 display board. ~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~ Sent from my Phone
> On Jun 10, 2014, at 2:42 PM, Don Caprio <[email protected]> wrote: > > I don't have a SMB board. Any available? If so I can look at options for both. > > > >> On Sat, Jun 7, 2014 at 12:25 PM, Tom Lafleur <[email protected]> wrote: >> When you make the panel for the front, look at an option for us who may want >> to install an SMB front panel board >> >> Thanks >> >> >> ~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~ >> Sent from my Phone >> >> >>> On Jun 7, 2014, at 3:07 PM, Fabio Battaglia <[email protected]> wrote: >>> >>> This is great! >>> I'll definitely be interested in the chassis, multiple fpmini boards and if >>> someone does a group buy of paddles, those too. >>> >>> Fabio >>> >>>> On Jun 7, 2014 6:53 AM, "Don Caprio" <[email protected]> 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. >>>> >>>> <mini-fp-chassis-small.jpg> >>>> >>>> <mini-fp-chassis-top-small.jpg> >>>> >>>> >>>> >>>>> 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: [email protected] >>>>> To: [email protected] >>>>> 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: [email protected] [mailto:[email protected]] On >>>>> Behalf Of Crusty OMO >>>>> Sent: Thursday, June 5, 2014 8:29 PM >>>>> To: [email protected] >>>>> 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: [email protected] >>>>> To: [email protected] >>>>> 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: [email protected] [mailto:[email protected]] On >>>>> Behalf Of Crusty OMO >>>>> Sent: Wednesday, June 4, 2014 7:20 PM >>>>> To: [email protected] >>>>> 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. >>>>> >>>>> >>>>> >>>>> <mime-attachment.jpg> >>>>> >>>>> >>>>> >>>>> Cheers, >>>>> Josh Bensadon >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> From: [email protected] >>>>> To: [email protected] >>>>> 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. >>>>> >>>>> >>>>> >>>>> <mime-attachment.jpg> >>>>> >>>>> >>>>> >>>>> >>>>> Now entering Phase 2... building a PCB. >>>>> >>>>> Cheers, >>>>> Josh Bensadon >>>>> >>>>> From: [email protected] >>>>> To: [email protected] >>>>> 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: [email protected] [mailto:[email protected]] On >>>>> Behalf Of Crusty OMO >>>>> Sent: Tuesday, May 13, 2014 1:19 PM >>>>> To: [email protected] >>>>> 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 >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "N8VEM-S100" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> -- >>>> Don Caprio >>>> [email protected] >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "N8VEM-S100" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "N8VEM-S100" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "N8VEM-S100" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > > > -- > ------------------------------- > Don Caprio [email protected] > http://www.uxpro.com > (925) 240-UNIX > -- > You received this message because you are subscribed to the Google Groups > "N8VEM-S100" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. 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