Posts tagged "NEC PC-6001/PC-6601 series"
An inexpensive 8-bit home computer series made by NEC after the success of the PC-8001. One of my favourite computers, you’ll be seeing a lot of projects for these.
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Assembling the PC-6001
When you’ve got a computer as underpowered as 1981’s NEC PC-6001, you need to squeeze every ounce of performance you can out of it. BASIC just didn’t cut it. For many enthusiasts, the only game in town was machine language. It’s well past time for me to apply my Z80 assembly knowledge to the little white wedge.
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PaPICOm
One of the hot new trends in the 8-bit computer community is the development of “Pico carts.” By using a Raspberry Pi Pico microcontroller instead of a ROM, you can make a cool software-defined cartridge that can do basically anything. For instance, it can load a ROM. I decided to make a prototype one for my beloved NEC PC-6001 series of home computer.
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A PC-6001mkII keyboard replacement
My NEC PC-6001mkII has a very spotty keyboard. The captive-dome switches inside are too corroded or dirty to work properly, a common affliction of the model. Luckily, honet, a hobbyist in Japan, has produced a replacement PCB for the PC-6001mkII keyboard named P6KBPCB. I finally got my hands on one, and I’m going to install it.
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A Backup Papicom
When you love a computer, sometimes you have to buy a second one of that computer, especially if it’s cheap. My justification? I wanted a good sacrificial test platform on which to do a bunch of internal PC-6001 mods, and I didn’t want to worry about frying my beloved first PC-6001. So, of course what I did was: pick up one that’s in better condition than my “good” one.
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Giving my PC-6001 a LIFT
Most software for the NEC PC-6001 was sold on tape cassettes. Tapes are great, but they require a lot of patience. I do strongly prefer the modern conveniences of floppy disk and ROM cartridge. What do you mean those aren’t “modern?”
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Why, you three-bit machine...
My NEC PC-6601SR “Mr.PC” has been a nearly permanent resident of my desk ever since it was repaired. This beautiful red computer works okay with a regular old VGA LCD monitor. So why did I pay a fortune to import a CRT monitor from Japan? There are two reasons. For one, it is the NEC PC-TV151 monitor that’s supposed to go with this computer. Also, it’s broken.
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Becoming Mr.PC's Type
Like the Sharp X1turbo, the Mr.PC is also not very usable without a keyboard. It’s yet another way in which NEC copied Sharp.
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That name again is Mr.PC
Get ready to step into the cyberpunk future of the mid-late 1980s, and don’t forget to bring your boxed wine. NEC pulled out all the stops on this, their final PC-6001 computer. I have to pull out even more stops to get the disk drive to work.
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Hearing the PC-6001 out
When I first set up the PC-6001, I had to bring it back to life by replacing the shorted tantalum capacitors on the motherboard’s power rails. It’s such a great little machine! After some more testing, however, it became obvious that I was getting no sound out of the poor little thing.
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Cleaning the keyboard on the PC-6001
When I first fixed the PC-6001, there were a few sticky keys on the keyboard. “H,” Left Shift, and - most importantly - Return were all bad to a certain extent. I could limp along with Ctrl-M for a little while to replace Return, but it was pretty awkward. How hard can it be to clean the keyboard?
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PC-6001mkII, or, sometimes the sequel is better
My PC-6001 came cheap because it was untested (and it did end up needing capacitor replacement), but the PC-6001mkII seems like it has always changed hands for a lot of money in Japanese collector circles, at least for as long as I’ve been paying attention to the prices. When I landed one for a great deal, I figured that there must be something wrong with it.
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The circle of life - an NEC PC-6001 arrives, breaks, is fixed
Sure, I’ve got NEC PC-88s, I’ve got NEC PC-98s, but didn’t NEC make anything that was a little friendlier to the home user? By now, you should know better than to doubt our friends at the Electric Company. The NEC PC-6001 has a thriving homebrew scene around it in Japan to this very day, and is still fondly remembered. Let’s rip one open and stuff it with hot molten lead.