Also, we should mention that early Mac OS "borrowed" the top 8 bits of a 32-bit pointer for operating system use: https://lowendmac.com/2015/32-bit-addressing-o

Also, we should mention that early Mac OS "borrowed" the top 8 bits of a 32-bit pointer for operating system use: https://lowendmac.com/2015/32-bit-addressing-on-older-macs/ https://lowendmac.com/2015/32-bit-addressing-on-older-macs/