Add new command line switch: -aux <empty|std80|ext80|rw3>
Add 6502/65C02 x normal/debugger alt read support for CPU emulation (#1353).
Fix bug in MemReadFloatingBus() reading from mem[] - no good, if MF_AUXREAD is set.
Support odd 80-col text video mode when aux slot is empty:
. add a new videoMode flag for VF_80COL_AUX_EMPTY.
Correctly support 80COL & DHIRES soft-switches when aux slot is empty or with std80 card.
Support VidHD's SHR with -aux <empty|std80>.
Save-state: support aux slot empty or with std80 card.
Support VidHD in slot 3 (via Config GUI or '-s3 vidhd') for SHR video modes only.
- AppleWin window is slightly enlarged when VidHD card is inserted.
Support IIgs 320x200 (and fill mode) and 640x200 video modes.
Debugger: add 'shr' command to view video
CUI: Allow user to specify width & height (for full-screen); and allow separate x,y scaling in full-screen mode.