6 ms·
Begging pardon, 1986, two years after the Mac. It also beat the Mac to market with a color GUI and ADB keyboards and mice. But yup, hardware-wise it was kneecap
by justanother 6y ago
Begging pardon, 1986, two years after the Mac. It also beat the Mac to market with a color GUI and ADB keyboards and mice. But yup, hardware-wise it was kneecapped from the start (1MHz IO bus, 65816 cpu would never rival m68k, low cpu clock speed) entirely for marketing reasons.
- rbanffy 6y agoDidn't it only slow down for slot-based IO? Or did it slow down to 1MHz for the built-in IO devices too?
- justanother 6y agoYup, the built-in graphics RAM was 1MHz as well; It couldn't redraw its entire screen inside a single refresh (although by remapping the 65816 stack to screen RAM, it got close enough to do most of it). The integrated disk controller (IWM) also ran at 1MHz.
- rbanffy 6y agoSuch a shame. Video RAM could be mapped to dual-port memory and run at any speed on both sides. :-( I really don't like the IIgs's design.