3 ms·
IRQ 7, DMA 1, Port 220H ! Now I have a vague idea of what IRQs and DMA are, but I still have no idea what port 220h was. Don't forget that the Sound Blaster ca
by Beretta_Vexee 1y ago
IRQ 7, DMA 1, Port 220H !
Now I have a vague idea of what IRQs and DMA are, but I still have no idea what port 220h was.
Don't forget that the Sound Blaster card had a MIDI port to which you could connect a controller or joystick.
That was also a nightmare to configure, with calibrations on all axes, button remapping, etc. We were really motivated for pre-teens.
- pansa2 1y ago> I still have no idea what port 220h was It’s the address (in I/O space, separate from memory space) which the CPU can read/write to communicate with the sound card.
- pezezin 1y agoIt was the other way around: that connector started as a game port that was then retrofitted as a MIDI port. https://en.wikipedia.org/wiki/Game_port https://en.wikipedia.org/wiki/Game_port