Awesome to get this history lesson Josh! And good cautions to heed. So TMS T-exas M-otorola ?
- jeffa On Tuesday, April 14, 2015 at 3:55:08 PM UTC-7, Crustyomo wrote: > > Ahh, yes, here's the story about the 2716.... gather around the fire... > > The chip prior to the 2716 was the Intel 2708. The 2708 used a > configuration of transistors that required 5V, 12V and -5V (like the > 8080). Texas Instruments and Motorola both 2nd sourced Intel and at the > same time Intel prototyped the 2716, TI and Mot started building the > "TMS2716" which are also tri-voltage devices. But, Intel improved the > transistor configuration and produced their i2716, which only used 5V. All > the other chip makers were "1 step" behind, so they benefited from Intel's > new technology and also built 5V only 2716's. Bottom line, be very > careful when plugging a 2716 into a socket, make sure that socket isn't > wired/powered for the TMS2716, or else you'll be damaging your chip. > If you plug a TMS2716 into a 5V only socket, it just won't work, data will > be all FF's I think. > > After searching various data books and IC Master, I found that only TI and > Mot chips are tri-voltage and are labeled TMS2716. I did a write up on > this, it's posted on Herb Johnson's website somewhere... > > Cheers, > Josh > > > ------------------------------ > Date: Tue, 14 Apr 2015 13:30:30 -0700 > From: [email protected] <javascript:> > To: [email protected] <javascript:> > Subject: [N8VEM-S100:6741] Re: CCS 2810 CPU Rom > > In my drawers I found > > TMS2716C - apparently not supported by GQ-4X > AM2716DC - Looks to be supported by GQ-4X as 'AM2716' > AM2732A-2DC - I found a setting for 'AM2732A' I wonder what the 2DC, > missing from GQ device id, means? > > What I'm reading is that the 2732 is pin compatible with the 2716. > Comments? > > > > -- > 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] <javascript:>. > 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.
