Joined: August 20th, 2018, 6:23 pm

September 6th, 2018, 2:50 am #91

CbobNJ wrote: Is it too late to add a plasma globe to that PC?
It has two, check the photos :)
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Joined: August 20th, 2018, 6:23 pm

September 6th, 2018, 3:51 am #92

Thanks for the insight and advice on that anode lead! By the way speaking of wiping the dust off.. my first computer was a TRS-80... model II .. look it up it existed :)
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Joined: August 16th, 2016, 11:47 am

September 6th, 2018, 7:04 am #93

I still have my Sanyo MBC-555 (with the Lotus 123board) 256K dual floppy computing beast of a machine. In the original box!
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Joined: October 8th, 2014, 2:05 pm

September 6th, 2018, 12:33 pm #94

tcurt wrote: Thanks for the insight and advice on that anode lead! By the way speaking of wiping the dust off.. my first computer was a TRS-80... model II .. look it up it existed :)
Ours was a Model I. I had to install the RAM and ROM upgrade in it to make it a Level 2, which involved soldering wires to the main board. Scared the hooey out of me when it wouldn't boot after I did the work. I figured I'd just toasted the boss's $1800 investment. I opened it back up and discovered the processor chip (a Z80) wasn't fully inserted into the socket. Since I hadn't removed it, I have to assume it came from the factory that way and the only reason it worked before is because the pins were lightly resting on the socket contacts.
If it ain't broke, I'll fix it!
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Joined: June 28th, 2017, 11:03 pm

September 7th, 2018, 10:55 am #95

Hinermad: Hence the nickname for the older machines in that line of computers - "Trash-80"

Now, although I'd had the use of the Apple ][, my first 8-bit computer was the good ol' Commodore 64 (I even have an emulator and a few game disks I'd transferred over from the original format).
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Joined: August 16th, 2016, 11:47 am

September 7th, 2018, 2:01 pm #96

Anybody but me have a Sinclair ZX81?
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Joined: July 12th, 2017, 12:19 am

September 7th, 2018, 2:22 pm #97

When I was in college the first time 'round, I had a class in "Mini & Micro Computers". It was a class for programming Z80 machines in assembly language. The TRS-80s we had were the preferred platform, because they has audio tape drives for mass storage. The alternate was a Heathkit H8, which had an octal keypad and display and no permanent storage.

Tim
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Joined: October 8th, 2014, 2:05 pm

September 7th, 2018, 2:33 pm #98

Antknot wrote: Anybody but me have a Sinclair ZX81?
My brother had a ZX80. He had a ball learning to program it.
If it ain't broke, I'll fix it!
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Joined: September 12th, 2014, 3:32 am

September 7th, 2018, 3:33 pm #99

Antknot wrote: Anybody but me have a Sinclair ZX81?
The closest thing I had was a Timex-Sinclair 1500 that I picked up at a yard sale in my teenage years. it was a cute little thing, but due to a number of factors (including the chicklet keyboard) it was not a daily driver and ultimately ended up, like most of the stuff I had in that time period, going in the trash because it was damaged due to me being bad with my toys. 😞
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Joined: August 16th, 2016, 11:47 am

September 7th, 2018, 4:23 pm #100

Re chickpea keyboard: I took a DEC VT-100 scrap keyboard and rewired it to the same matrix as the Sinclair. Then wired it in parallel with the membrane keyboard with a ribbon cable and a 16 pin dip socket / header.
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