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.
