Search found 118 matches

by thewiz
06 Feb 2019 15:11
Forum: SOFTWARE
Topic: New tape cleaner tool
Replies: 36
Views: 1506

Re: New tape cleaner tool

Wow Bill, thats an amazing piece of work.

That is at least one commercial MIA that I know of recovered.

As for Interrupt, unfortunately these wavs are just files I accumulated from various places so I don't know what they are meant to be.
by thewiz
31 Dec 2018 10:41
Forum: SOFTWARE
Topic: New tape cleaner tool
Replies: 36
Views: 1506

Re: New tape cleaner tool

Great work Bill.
by thewiz
26 Nov 2018 15:44
Forum: SOFTWARE
Topic: New tape cleaner tool
Replies: 36
Views: 1506

Re: New tape cleaner tool

Well done Bill. One down.
by thewiz
22 Nov 2018 13:48
Forum: SOFTWARE
Topic: New tape cleaner tool
Replies: 36
Views: 1506

Re: New tape cleaner tool

What would be read? In normal operation an interrupt is triggered on an edge (can't remember which on). Would not the bit read just reflect if an edge has been detected or not? As an aside, one of these days, when the emulators are up to it, I would love to write a tape loader with music and loading...
by thewiz
18 Nov 2018 17:23
Forum: GENERAL DISCUSSIONS
Topic: Problems with Ads on Memorum?
Replies: 13
Views: 794

Re: Problems with Ads on Memorum?

Not seeing any ads.
by thewiz
18 Nov 2018 14:12
Forum: SOFTWARE
Topic: Unconverted mp3s
Replies: 7
Views: 414

Unconverted mp3s

Hi all, I have a number of mp3s that I have discovered over the years that I haven't been able to convert. Now might be a good time to see if, as a group, we can do it now. This first list are working mp3s, i.e. that load correctly into a Memotech however I've not been able do that with my setup. Ji...
by thewiz
16 Nov 2018 16:32
Forum: SOFTWARE
Topic: New tape cleaner tool
Replies: 36
Views: 1506

Re: New tape cleaner tool

Here are some calcualtions that might help: The MTX tape routine works by configuring the CTC to interrupt on edge detection. While waiting for the edge, register A is decremented. No of cycles to execute "DEC A ; JP C, -3" - 14. It takes 14 cycles to decrement reg A. 22050 sample rate is 4E6/22050 ...
by thewiz
16 Nov 2018 11:49
Forum: SOFTWARE
Topic: New tape cleaner tool
Replies: 36
Views: 1506

Re: New tape cleaner tool

Hi Lars,

Great that you have a new tool for converting wavs as I still have a number of wavs that I've not been able to convert. I've got some mp3s too which are known to work.

I will dig out the tape format and post it later today. Off for a flu jab now.

TTFN
Paul Daniels
by thewiz
02 Nov 2018 14:34
Forum: SOFTWARE
Topic: Hustle Chumy (Sega SG-1000 conversion)
Replies: 3
Views: 331

Re: Hustle Chumy (Sega SG-1000 conversion)

That looks great. Can't wait to try it out.
by thewiz
18 Oct 2018 13:15
Forum: HARDWARE
Topic: NTSC/PAL VDP setup?
Replies: 10
Views: 605

Re: NTSC/PAL VDP setup?

Could the patch be more to do with interrupt driven sound/music? As the VDP interrupt will be different, i.e. 50Hz or 60Hz, the interrupt routine will need changing. I think it's, skip every 6th interrupt. It does mean sound from every 5th interrupt is twice as long. That makes 5 * 20ms = 100ms = 6 ...