Search found 182 matches

by stephen_usher
Fri Nov 22, 2019 12:18 pm
Forum: Hardware
Topic: vDrive ZX: emulated ZX Microdrive
Replies: 31
Views: 6389

Re: vDrive ZX: emulated ZX Microdrive

Derek_Stewart wrote:Hi,

Can data files saved vDriveQL be read on vDriveZX?


No, different firmware and file format.

The two sets of image files and configurations can co-exist on the same SD card but one won't see the other.
by stephen_usher
Thu Nov 21, 2019 10:51 pm
Forum: Hardware
Topic: vDrive ZX: emulated ZX Microdrive
Replies: 31
Views: 6389

Re: vDrive ZX: emulated ZX Microdrive

Two thoughts: - Wonder if the vDrive would also work when the QL is not running QDOS/Minerva, but the GST 68K/OS? - The ICL OPD (also marketed as BT Merlin Tonto, Telecom Australia Computerphone) is based on Sinclair ZX83 (QL) hardware including the QL Microdrive. Wonder if the vDrive would also wo...
by stephen_usher
Wed Nov 20, 2019 3:10 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8296

Re: Bad Apple demos

Nice video, just shows the difference between C and assembler. Not quite, it's more akin to the difference between interpreted code and compiled. My code was reading what to put into the bytes onto the screen and doing so one at a time. mk79 wrote a program which interpreted the same sort of differ...
by stephen_usher
Wed Nov 20, 2019 2:53 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8296

Re: Bad Apple demos

QLvsJAGUAR wrote:@Stephen, did you continue to work on your project?


No, I thought it probably a dead end given Marcel's far faster rendering, though I did post a link to the source and test files so anyone who has a C68 cross compiler can play.
by stephen_usher
Tue Nov 19, 2019 11:30 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8296

Re: Bad Apple demos

NormanDunbar wrote:I have to admit, the title of this thread made me think that it was a piss take on some really bad demos for Apple products. Oops! :D

Cheers,
Norm.


Well, the QL and Macintosh were announced within a week of each other.... :-)
by stephen_usher
Tue Nov 19, 2019 11:28 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8296

Re: Bad Apple demos

Nice video, just shows the difference between C and assembler. Not quite, it's more akin to the difference between interpreted code and compiled. My code was reading what to put into the bytes onto the screen and doing so one at a time. mk79 wrote a program which interpreted the same sort of differ...
by stephen_usher
Tue Nov 19, 2019 11:22 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8296

Re: Bad Apple demos

What I mean here is that the original video is exactly synchronised to the music, so scene changes happen at specific notes, etc. I have written video software before, I know how to synchronize video and sound that was already in step in the first place. But the music I got from the net does not ne...
by stephen_usher
Tue Nov 19, 2019 12:05 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8296

Re: Bad Apple demos

Thanks! Well, I have no idea how the music could be better synchronized as this is not my area of expertise. If it were synchronized a real screen grab might make a lot more sense, but as it is it‘s more like a proof of concept than a polished product. The only way to fully synchronise would be to ...
by stephen_usher
Thu Nov 14, 2019 6:37 pm
Forum: General QL Chat
Topic: Beyond Super Gold Card
Replies: 86
Views: 4320

Re: Beyond Super Gold Card

Unfortunately QDOS doesn't have a display abstraction layer, such as the Atari ST has with GEM, so there's no way of sending commands over the restrictive data bus provided by any GPIO interface and asking the Pi to render it natively. That would be pointless. There are mandatory tasks like bitmap ...
by stephen_usher
Thu Nov 14, 2019 2:30 pm
Forum: General QL Chat
Topic: Beyond Super Gold Card
Replies: 86
Views: 4320

Re: Beyond Super Gold Card

By the way, I'm all but sure that HDMI is a good idea! I have a number of monitors with only VGA input. And all my HDMI ones also have VGA! Many brandnew ones still have VGA, very easy to get. Definitely no problem yet, if one takes a little care. For myself, HDMI would be a clear disadvantage ! Ev...