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Re: Early Covox uses:

FreddyV wrote on 2020-12-27, 19:11: Speech synthesis hardware was doing the calculation, here, it is a simple DAC, the CPU will need to do everything and it may be too slow. Unless it's diphone concatenation. Then it's primitive.

Re: Early Covox uses:

kolderman wrote on 2020-12-26, 19:25: Does that Tandy laptop have Tandy sound? If not, one nice use of a COVOX plug is in emulating Tandy sound using TEMU. I doubt that a 7.16MHz machine will be able to run TEMU. Doesn't it need a 386?

Re: Why is ADPCM so important?

In my opinion the biggest advantage of the various types of adaptive differential pulse code modulation techniques is their relatively low complexity overhead compared to normal linear PCM or companded PCM. Typical variants allow you to save 50% space with relatively small quality loss. The IMA …

Re: ATI Color Emulation Card

Good point! I missed that somehow. It just occurred to me that the switch settings might be similar to those of the ATI Graphics Solution. The following diagram is from its manual. (AGA is Commodore's OEM name for that card.) aga_switch_settings.png Assuming that the meaning of the individual …

Re: ATI Color Emulation Card

Interesting. So it does have the same gate array, just like I assumed. It is also not a pure color emulation card, because it clearly has a composite video header and there are too many traces running to the DE9 socket. There is no 16(.257)MHz oscillator, though, i.e. the MDA/Hercules pixel clock is …

Re: HP T5710 windows 98 build

I believe the Win98 drivers largely eliminate the BIOS-triggered beeping. In pure DOS, however, the system will beep whenever you press a few keys too many or whenever the keyboard buffer is full. With this type of built-in speaker at maximum volume the resulting beep comes closer to a smoke alarm …

Re: HP T5710 windows 98 build

Small life hack: If the brutally loud beeper annoys you, but you don't want to mod the hardware, just grab a headphone plug from your parts drawer, plug it in and enjoy the silence! (The beeper is controlled by the sound chip, internally, and the sound chip will reroute everything to the audio …

Re: HP T5710 windows 98 build

Jo22 wrote on 2020-10-30, 08:01: What about a stand-alone DOS, like Caldera DOS, FreeDOS or IBM DOS 7/2000? Does it work the same in this case as MS-DOS 7.x does? I have a working FreeDOS installation. It detects USB flash drives as ordinary hard drives, provided that they have been plugged in …

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