Search found 465 matches

by 1024MAK
Sun Jan 14, 2018 6:04 am
Forum: General QL Chat
Topic: Why did Sinclair hate National Semiconductor?
Replies: 5
Views: 395

Re: Why did Sinclair hate National Semiconductor?

They DID NOT hate National Semiconductor. Every manufacturer of so called standard 74 series logic uses their own internal logic design to fulfill the overall logic function. This means that logically, a 74 series part from any manufacturer should work. However, timing wise, they may not work the sa...
by 1024MAK
Sun Dec 31, 2017 3:36 am
Forum: Hardware
Topic: Q68 Order Process
Replies: 51
Views: 2833

Re: Q68 Order Process

Hi Derek

I have just sent you a PM.

Mark
by 1024MAK
Tue Dec 26, 2017 12:24 am
Forum: The Off-Topic Section
Topic: I wonder how quiet it will be in here today!
Replies: 9
Views: 508

Re: I wonder how quiet it will be in here today!

This is me not being here on the 25th :oops:

Mark
by 1024MAK
Sun Dec 24, 2017 8:26 pm
Forum: General QL Chat
Topic: I, Dave, have a major announcement that will...
Replies: 35
Views: 1840

Re: I, Dave, have a major announcement that will...

The only correct (to international standard ISO 8601) format is year month day as YYYY-MM-DD. So today is 2017-12-24 ;)

Mark
by 1024MAK
Sun Dec 24, 2017 8:10 pm
Forum: Hardware
Topic: PSU alternative?
Replies: 56
Views: 9026

Re: PSU alternative?

Apart from the "common" 0V / GND / "ground" wire, the 9V DC and the 15.6V AC parts of the power supply work independently. The 15.6V AC from the transformer is referenced to the 0V connection. So on the positive half cycle of the AC waveform, the instantaneous voltage is positive...
by 1024MAK
Sun Dec 24, 2017 7:54 pm
Forum: General QL Chat
Topic: Happy Christmas Everyone!
Replies: 16
Views: 720

Re: Happy Christmas Everyone!

Happy Christmas to everyone. And may the New Year bring a bigger and stronger QL community :D

Mark
by 1024MAK
Fri May 19, 2017 6:49 pm
Forum: Hardware
Topic: New QL backplane.
Replies: 49
Views: 5733

Re: New QL backplane.

Paul wrote:
Dave wrote:That's not even funny.

I'm sorry. I meant it to be a joke. I shouldn't try posting funny thing when I don't understand the language enough.
Kind regards Paul

Paul, I think it was my post that caused the meltdown (sorry)...

Mark
by 1024MAK
Fri May 19, 2017 12:15 pm
Forum: Hardware
Topic: New QL backplane.
Replies: 49
Views: 5733

Re: New QL backplane.

Only 12 drives :shock:

That's not what I call mass expansion...

I would want a 4 by 4 bank of drives as a minimum.

Now where did I put that nuclear power station that I want it to control...!!!!

Mark
by 1024MAK
Sat Mar 25, 2017 7:18 pm
Forum: General QL Chat
Topic: ZX-TEAM Meeting 2017 Mahlerts, Germany
Replies: 8
Views: 1377

Re: ZX-TEAM Meeting 2017 Mahlerts, Germany

Wave (very slowly) at the webcam :lol:

Mark
by 1024MAK
Sat Jan 21, 2017 1:22 pm
Forum: Hardware
Topic: ULA ZX8301 - TV Picture Capabilities
Replies: 62
Views: 5952

Re: ULA ZX8301 - TV Picture Capabilities

A GAL used to replace the existing HAL would not be capable of the complex logic required to add extra colours like you suggest :-( Really, to add extra colours, the ZX8301 needs to be replaced. You could piggy back a CPLD or a FPGA on an adaptor PCB above the ZX8301 to add extra colours and functio...

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