OK, not really. However, I found this input latency comparison of old vs new quite interesting. What is especially interesting is that the winning system is a 6502 that (if I remember correctly) does not use interrupts for keyboard input. This reminds me of past comments from Garth about 6502 ...

I posted this on 6 Commodore / 8 Bit boards and there are only 7 comments. There are more comments on Hackaday.

Most of the hackaday comments are crap. If someone takes the time to share an interesting story about how a product was developed and how they invested years of their own time in it, I ...

The 6502 might be faster than the 68K at some things, but executing the Dhrystone benchmark is not one of them :-)

Looking at the table at http://www.netlib.org/performance/html/dhrystone.data.col0.html, the slowest 68K (Mac) got 0.4 MIPS from 7.8Mhz (0.051 MIPS/MHz). Apple and C-64 ranked dead ...

Like many programmers of my generation, I grew up with a C=64 in the house. They weren't the greatest machines in the world, but they were VERY accessible. You could buy them in practically any store (mine came from K-mart) and for far cheaper than you could touch an Apple, IBM, or CP/M box.

I ...

I think it's often imprinting - The first CPU you get to know well is the one you fixate on. Probably the C64 and the Beeb, the Apple II and the PET have a lot to do with it. Captured in our teens or 20's, we're still here in our ... middle years.

(And the Atari, the NES, ...)

I defiantly think ...

I find the phrase "Every[one|body] will agree..." is fairly consistently a red flag for a weak argument. It is a weak attempt to take one's opinion and elevate it to the level of a group consensus.


I think he was joking. Since everyone here has some special interest in the 6502, of course we're ...

And yes, the serial port appears to work! Time to reward myself with the 50th aniversary Doctor Who episode. Hope it doesn't suck.
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When I get back I'll have to dig up that 65org16 Forth thread. I am excited about doing some 16-bit work. I like the minimalism of 8 bits, but it quickly ...

I have been enjoying reading olduse.net - a USENET feed that is delayed 30 years. Some of my favorite posts are excited rants about "up and coming" products that turned out to be massive flops. A few weeks back there was much excitement about the IBM "peanut" (which turned out to be the PCjr ...

Awesome! Let's get tg68 loaded in there and boot up NetBSD

Hey guys,

Does anyone have any empirical data on SD card performance with 6502s? I have a 1Mhz system and am bit banging SPI using a 6522. I am getting about 170ms read time per 512-byte sector. I'm curious what timings others are getting who are bit-banging or using Daryl's 65SPI chip. I'm also ...

Good point about data retention. What I'd worry about most are EPROMs and similar chips which rely on a minuscule charge on a floating gate (although chips that use fuse technology aren't perfect either). Of course if the part we're buying is blank (unprogrammed) there's no data to worry about ...

Got it working. Two possible culprits:

1) The ground issue that Garth suggested. I found a wobbly ground post.
2) Not enough current from the NMOS 6522 to drive the TXB0104. On the 3rd re-reading of the datasheet, I found a single sentence stating that it needed 2mA. The 6522 datasheet says it can ...

The 7805 does have a thermal shutdown and short circuit protection, so under normal circumstances it should survive.
That's what I used to think until one day I accidentally applied a short to a 7812 on a gadget I was fooling with. It didn't have a heat sink and it failed before I realized there ...

My SBC was built with mostly junk box parts. I use a Rockwell 6551 that had several broken pins. Was going to replace it with a new 65C51 but maybe not now. There's enough of a nub left to conduct

Congrats!!!