4 ms·
Three times (MC680x0 to PowerPC to x86), so far, or more if you also count the 24-bit to 32-bit and 32-bit to 64-bit transitions.
by wsh 6y ago
Three times (MC680x0 to PowerPC to x86), so far, or more if you also count the 24-bit to 32-bit and 32-bit to 64-bit transitions.
- ddingus 6y agoI didn't realize there was a 24 bit to 32 bit. Was that the 68K to PPC transition?
- Camillo 6y agohttps://lowendmac.com/2015/32-bit-addressing-on-older-macs/ https://lowendmac.com/2015/32-bit-addressing-on-older-macs/
- ddingus 6y agoThanks! Yeah, I passed this part of Mac history right by.
- mrlonglong 6y agoBad memories there. Programmers would stuff crap in the high 8 bits of the pointers. Not so good once running on 32 bits!
- ddingus 6y agoOuch! That seems both tempting, because the buts are right there, unused. ...and a bad idea, because at that time people had to know the address space was going to expand.