adjusted number of pages; separate mode info entry for 40-column text
backend.py: typo
clear cached sprites from get_put_store on mode change
include full dbcs char in clipboard copy if half selected
adjust screen mode check on resume to text mode not being in mode_data
moved per-screen memory access to different functions
update screen during bload/bsave
remove EOF marker from BLOADed data
added model for test CHAINMEM (currently FAIL due to not taking into account FCBs for start of var memory)
changed testbed to use graphical mode
added test BSAVE (pass)
fixed text mode poke inro different pages
simplified video memory access
added Tandy tests for BSAVE
don't execute reset.clear() when errors occur in CLEAR statement
replaced Tandy screen 1&2 BSAVE test model output with GW-BASIC ones
DEF SEG segment persists on resume
further simplified video memory access
moved segmenting adjustment for video memory access into mode-specific accessors
Moved memory accessors into mode_info