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Yesterday, 01:59 AM

JonB replied to a thread Kaypro 4 CPU upgrade need help identifying ?? in CP/M and MP/M

Sorry, I don't know anything about the CPU upgrade board. Hopefully another member can advise you. I see you have a lot of Atari STs. I salute you!

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8 replies | 190 view(s)
August 15th, 2017, 11:46 PM

JonB replied to a thread Kaypro 4 CPU upgrade need help identifying ?? in CP/M and MP/M

Randomly turning the pots on the monitor board is a very bad idea, because you don't know what the expected result is going to be, and you may make...

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8 replies | 190 view(s)
August 13th, 2017, 09:14 AM

JonB replied to a thread Missing Model 4P in Tandy/Radio Shack

+1 for 3-in-1 oil. I apply to the carrier rails with a q-tip ("cotton bud" in the UK) as it is really easy to let too much out of the can and end up...

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13 replies | 507 view(s)
August 7th, 2017, 06:08 AM

JonB replied to a thread Eagle ][E no video. in CP/M and MP/M

From the service manual: The monitor is a Motorola 12 inch monitor containing its own power supply and requires only a single AC input (110 VAC,...

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5 replies | 200 view(s)
August 7th, 2017, 05:56 AM

JonB replied to a thread Eagle ][E no video. in CP/M and MP/M

@Old Tech Fan: How much general purpose electronics know-how have you got? Here's a few things to try. open up the Eagle and... Look for the...

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5 replies | 200 view(s)
August 5th, 2017, 09:17 AM

JonB replied to a thread Tandy Model 16 in Tandy/Radio Shack

Moreish?

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11 replies | 514 view(s)
August 4th, 2017, 07:53 AM

JonB replied to a thread Tandy Model 16 in Tandy/Radio Shack

Greedy.. ;) Mind you, I have a Model IV, IV P and a II in my shack and so I get you.. Also seem to have four Superbrains and one SB mainboard,...

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11 replies | 514 view(s)
August 3rd, 2017, 11:53 PM

JonB replied to a thread Tandy Model 16 in Tandy/Radio Shack

Hey Pete, don't you already have a Model 16?

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11 replies | 514 view(s)
July 25th, 2017, 08:45 AM

JonB replied to a thread Toshiba T250 in CP/M and MP/M

I think Chuck is saying that sysgenning a 5.25" boot disk to the 8" drive won't work, and I agree. But maybe you can boot off a 5.25" drive and...

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9 replies | 343 view(s)
July 24th, 2017, 10:53 PM

JonB replied to a thread Toshiba T250 in CP/M and MP/M

You can try it. However, your point about CP/M builds is correct. Parts of CP/M (CCP, BDOS) were standard, but each machine had its own BIOS to...

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9 replies | 343 view(s)
July 24th, 2017, 10:51 AM

JonB replied to a thread Toshiba T250 in CP/M and MP/M

Yes you can! You need a DOS era PC (the FDC chip is the key) and one of these: https://github.com/NF6X/fd50to34 Which you can get from OSH Park...

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9 replies | 343 view(s)
July 23rd, 2017, 11:19 PM

JonB replied to a thread Is it right that Kaypro-10 HDD can be replaced with Seagate ST-225 ? in CP/M and MP/M

You could go modern and not worry about your HDD crashing, with KayFreHD ...

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4 replies | 258 view(s)
July 23rd, 2017, 11:13 PM

JonB replied to a thread Osborne Variant 1 in CP/M and MP/M

That is the most annoying piece of filming I have seen in a while. Mr Blurrycam! :)

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10 replies | 484 view(s)

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JonB
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JonB
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