It's not really that unusal - there are tri-format floppy disks for Amiga, Atari ST and PC all in one too. They were mostly used for budget releases. --Dirk...
Just doing some more reading on this, it is also used in the bbc micro and the colecovision. Its also in the sega master system but integrated with the vdp...
A pretty good demo of what the SN76489 sound chip is capable of, taken from a sega master system http://www.youtube.com/watch?v=mEsE42YRtws According to the...
Hi Guy, I am almost certain that this chip was part of the MSX standard as was the Ti99 4A VDP. Leslie. ... From: Guy Thomason To: vzemu@yahoogroups.com Sent:...
Apparently the Laser 3000 had one: http://home.total.net/~hrothgar/museum/L3K/L3KSound.html The Memotech 512 MTX was the computer that I was chasing for a...
MSX uses the Yamaha clone of the AY chip, not the TI. I've never found enough info on the Memotech to tell which sound chip it had but the motherboard layout...
Reading up on the TI chip I read about comparisons with the AY-3-8912 so I went on to you tube and listened to some cpc-464 demos. Some coders have even been...
There is 'C' source to convert sound data for speech and Z80 playback source if you look around. The AY was interfaced to the TRS-80. The circuit diagram I...
Finally fixed the crackly sound emulation in vzem, I was getting the same hassle with the SN76489 emulation so I went back to the drawing board and did it...
The latest build fixes the sputtering with the vz speaker and adds support for the Compumuse hardware project. Instead of using the printer port I have set the...
... WOOHOO!!!! The VZ has never sounded so better.... Attached is listing 2 from the article. Needs a little bit of fine tuning, such as example 4 - the...
Three channels of tone at once: OUT 128,142 OUT 128,4 OUT 128,144 OUT 128,174 OUT 128,8 OUT 128,176 OUT 128,206 OUT 128,12 OUT 128,208 "given a voice number,...
Guy, Just wondering if you have implemented the 4 Meg memory Expansion, ie out 16, 255 ? Also, has anyone ported the Editor Assembler with the Diskops6 patch...
Actually the out 16 is the disk port, but you know what I mean (70H - 7FH I think). ... From: Leslie Milburn To: vzemu@yahoogroups.com Sent: Saturday, October...
... I've only ever had v4 which has been ported. The only thing '6' that I have is Mark Harwood's v6.0x Attached is listing 1 from the compumuse article. May...
I had the option in the memory configuration menu but it wasn't active - my bad. Latest version has all 4 meg. I removed the 64k option because there's no ...
Thanks for typing those listings out, I was going to do it but hadn't yet. The noise channel sound is definitely wrong, I'll see if I can find some other...
Does anyone know if theres a VZ standard for mapping a port to a real time clock? This would be a useful project in hardware and is also easy to emulate, by ...
... I had a very very quick google, but didn't come up with anything straight away, and was as far as I got. I recall an article either in a VZ journal, or...
From what I've read white noise is the sum of all frequencies playing at once, the same way mixing all colors at once produces white I've downloaded some waves...
Hi Guy, Great, I need the 4 Meg as I am now planning to complete NOS using your emulator because it has become as good as the real thing now (IMO) and it means...
Also Guy, if you are really really keen a massive improvement would be to allow an alternative disk format. I am not sure how hard this would be to do but...
Yep the CPU speed can be speeded up, I just had a play at double speed and 35mhz. The other way to speed it up is not lock the screen redraw at 50fps, but ...
Thats great news Guy, I will now look into the program transfer issue as I am keen to get this burnt onto a CD or DVD before any of my drives fail. There was...
When its convenient to send me that info I'd certainly be interested in it, but no great rush. I hadn't thought of mapping the windows mouse to a VZ port, that...
On the PC I just use windows sound recorder, available under program files -> accessories -> sound recorder. It lets you specify the sample rate, input source...
Hi Guy, The RTC: I based the project upon two articles, firstly "using the Real Time Clock" which was in Dr Dobbs Journal in 1991 and another article "Real...
Have fixed the white noise channel, the 76489.vz snapshot now makes the phaser sound and the explosion. There may be some more tweaks required but it sounds...
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