On Mon, 29 Dec 2014 10:44:20 -0600, Alan Altmark wrote: > >Don't get me wrong. A machine that was designed to let you change the >underlying hardware design without altering the programming architecture of >the machine was very smart. And way cool. And a major move forward in the >industry. There's a reason the architecture has survived for 50 years with >those old 24-bit applications still running just fine thank-you-very-much. > Alternatives are:
o HLL with architecture-specific compiler variants. This provides me portability over (at least) z, Intel, and Sparc. IBM might see this as a negative business value. o Emulators. Mac OS has survived three radically different hardware platforms (M68K, PPC, I86) and two OS platforms with emulation bridges at each transition. Very effective. When I (belatedly) upgrade I'll need to recompile my PPC programs. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
