Don ‹ I should add some additional details on what I said. I have a PCB ready-to-go that¹s a full-featured SBC which you can take a look at on Web site. I like the Micro-KIM I built, so that¹s definitely a great option.
If you wanted to make a simple breadboard 6502, I¹m thinking: * 65C02 * SRAM * EPROM * 74LS138 * 1MHz TTL oscillator * A few 3.3k resistors for pull-ups * DS1813 Econo-reset (TO92) * Appropriate bypass caps To this, I¹d add: * 6551 ACIA * MAX232 * A few 10uF caps for the MAX232 * 6522 VIA So, that¹s 7 chips, a few passives, a clock and a reset chip and a way to communicate. There¹s also this design: http://wilsonminesco.com/6502primer/potpourri.html#BAS_CPU which is similar but has no console I/O. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.classiccmp.org/cini http://www.classiccmp.org/altair32 From: Richard A Cini <[email protected]> Reply-To: S100-Post <[email protected]> Date: Monday, August 25, 2014 at 7:29 PM To: S100-Post <[email protected]> Subject: Re: [N8VEM-S100:5032] Re: Micro Computers your youngsters I¹m thinking 6502. That¹s 4 or 5 chips at the most if you don¹t do fancy memory decoding. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.classiccmp.org/cini http://www.classiccmp.org/altair32 From: yoda <[email protected]> Reply-To: S100-Post <[email protected]> Date: Monday, August 25, 2014 at 4:34 PM To: S100-Post <[email protected]> Subject: [N8VEM-S100:5030] Re: Micro Computers your youngsters Might want to take a look at this page CP/M in 9 chips might be interesting - Grant has several designs there too. Dave On Monday, August 25, 2014 2:58:56 PM UTC-5, Don Caprio wrote: > My 11 year old son and I have been kicking around doing a > science experiment this year based on computers. We'd like > something simple that he can solder up and run simple program (basic) > on a terminal. Something simply as displaying his name, counting from > 1 to a million, make lights blink, something along that line. > > Obviously S100 is way beyond his ability, The Raspberry pi is an option > but it's already assembled. > > Something we could breadboard and then spin up a simple PCB would be great. > > What do ya think? Any ideas suggestions would be appreciated. > > > -- > Don Caprio > [email protected] <javascript:> > -- 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.
