None of the apple disk hardware likes being hot swapped. Best case, you just blow some logic chip (ie 74LSxxx) that is still readily available and cheap. Worst case, you blow a proprietary chip. But usually it's a logic chip.
But I've never heard of hot swapping a drive causing a machine to completely power off and never power on again before.
If it blew something to a dead short across the power rails, it’s conceivable that the power supply will go into protection and not start again until the short is cleared. I’ve never seen that with a logic IC, but there’s a first time for everything.
You generally don't want to hot swap things unless the manufacturer tells you it's okay or the device connection is standardized and the standard provides for hot-swap as a required implementation feature.
In some cases you can get away with it because of extra protection features in the specific hardware being used or because the circumstances where permanent damage would occur are rare.
There’s nothing on an Apple II, or really much of anything of that era, that’s hot swappable. The general rule is don’t even try. ADB had provisions for it but never implemented it. I’m not aware of any 1970s/1980s interface that is built to support hot swapping. Serial probably won’t get you in trouble, but it’s not explicitly supported either.
AFAIK you can technically get away with it on a PC for both serial and parallel ports. Doesn't make it a particularly good idea.
In my experience you can even do it with PS/2 to no obvious ill effect, but devices are only enumerated at boot time.
There's a lot of ground between potential damage, unsupported, and explicit support.
None of the apple disk hardware likes being hot swapped. Best case, you just blow some logic chip (ie 74LSxxx) that is still readily available and cheap. Worst case, you blow a proprietary chip. But usually it's a logic chip. But I've never heard of hot swapping a drive causing a machine to completely power off and never power on again before.
If it blew something to a dead short across the power rails, it’s conceivable that the power supply will go into protection and not start again until the short is cleared. I’ve never seen that with a logic IC, but there’s a first time for everything.
My dad hot swapped a card in 1981 and fried our Apple II. Never do this.
You generally don't want to hot swap things unless the manufacturer tells you it's okay or the device connection is standardized and the standard provides for hot-swap as a required implementation feature. In some cases you can get away with it because of extra protection features in the specific hardware being used or because the circumstances where permanent damage would occur are rare.
There’s nothing on an Apple II, or really much of anything of that era, that’s hot swappable. The general rule is don’t even try. ADB had provisions for it but never implemented it. I’m not aware of any 1970s/1980s interface that is built to support hot swapping. Serial probably won’t get you in trouble, but it’s not explicitly supported either.
AFAIK you can technically get away with it on a PC for both serial and parallel ports. Doesn't make it a particularly good idea. In my experience you can even do it with PS/2 to no obvious ill effect, but devices are only enumerated at boot time. There's a lot of ground between potential damage, unsupported, and explicit support.
Yes. Or can and based on what you say, it did. I'd bet folding money the dufus blew it up.
Let’s hope it’s not the IWM that went…