Re: [M100] Adapter Board

Yeah those pins I posted were only for a special situation where you needed both round and low profile. On Jun 16, 2016 4:52 PM, "Stephen Adolph" wrote: > thanks for the offer, a write up on bitchin100 would be great! > > >

Re: [M100] Adapter Board

thanks for the offer, a write up on bitchin100 would be great! http://www.ebay.com/itm/5x-40-pin-1-row-0-1-PCB-Male-Machined-Round-Header-DE1557-/310891410876?hash=item48629275bc:g:Fz0AAOSw-jhUHNTp these would work for pins.. On Thu, Jun 16, 2016 at 4:14 PM, Atsushi Takahashi

Re: [M100] Adapter Board

it is an attempt to do so. I don't think it works too well. There seems to be a small probability that it comes up in a non zero state, which I never got to the bottom of. On Thu, Jun 16, 2016 at 4:39 PM, Atsushi Takahashi wrote: > The 500k + 1uF looks like part of a

Re: [M100] Adapter Board

The 500k + 1uF looks like part of a power-on reset to reset the 74AC74 to point to bank 0, perhaps??? On Jun 16, 2016, at 4:29 PM, Stephen Adolph wrote: > I will post a parts list later. > Pins should be round machine pins. you can get round machine pin > headers on ebay

Re: [M100] Adapter Board

I will post a parts list later. Pins should be round machine pins. you can get round machine pin headers on ebay for .10-.20 cents per pin. Logic parts look right. there are variants that also work, TC551001 BFTL for example. no need for low leakage but it's better of course. the time

Re: [M100] Adapter Board

Dear Steve, I’m excited that you released the QUAD PC board! I’m a new Model 100 owner with a long history going back to the S-100 bus days. Most of the components on the board are in the photo on the QUAD web page but I was wondering what capacitors and resistor values are needed: 0.1uF

Re: [M100] Adapter Board

What, the rex 4 boards? Don't worry about that. Unless you actually want them for something? I'll mail them to you just a favor if you have some use for them, but I don't care about the $6. I don't have them yet. Probably another week. -- bkw On Jun 16, 2016 12:29 PM, "Stephen Adolph"

Re: [M100] Adapter Board

On Jun 16, 2016 11:51 AM, "Stephen Adolph" wrote: > > you can build a Quad if you want.. it's up there. no instructions however. Oh very nice. I don't happen to be in the market for quad myself because I have a pg designs already, but I'll probably build one anyway just

Re: [M100] Adapter Board

Hi Brian, I think that the space at one end would be enough for a diode or even a small jumper; as a matter of fact one of the jumper positions on the M100ROM board is for (re)programming. You'd still need an adapter of course. But I don't think I'd bother unless I had a pile of 27C256s to get

Re: [M100] Adapter Board

Thanks for the heads up. I hadn't bought any other parts yet and the boards themselves are only $6 for 3. No big. -- bkw

Re: [M100] Adapter Board

you can build a Quad if you want.. it's up there. no instructions however. On Thu, Jun 16, 2016 at 11:50 AM, Stephen Adolph wrote: > that rex does not work. I will pull it down. it was for visibility only.. > > On Thu, Jun 16, 2016 at 11:26 AM, Brian White

Re: [M100] Adapter Board

that rex does not work. I will pull it down. it was for visibility only.. On Thu, Jun 16, 2016 at 11:26 AM, Brian White wrote: > Crap I'm sorry Mike! > > But the question was about an option rom not the main rom. A dip28 chip just > about fills all available volume in the

Re: [M100] Adapter Board

Crap I'm sorry Mike! But the question was about an option rom not the main rom. A dip28 chip just about fills all available volume in the option rom socket. If you need to add anything else to the board, it will be difficult. There is a little room on the edge, and there is about 1/10" of height

Re: [M100] Adapter Board

Mike, I'm not trying to make a re-programmable Option ROM. Just a one time insert. I do most of my testing and debugging with Virtual-T, then burn a 27C256 and do final testing on my NEC which doesn't require an adapter. So its really out of habit that I ask the question about an adapter for