The 6845 CRTC (Cathode Ray Tube Controller) controls how the display is generated. It is written to with VDU 23,0 which also takes account of the current *TV...
1 month ago

Download basic.sav and copy the file to an appropriate RT11 disk image with a tool such as putr. · Alternatively, download the bbcpdp. · Boot into into RT11,...
7 months ago

SIMH running Unix. Ersatz11 running Unix. bbcbasic - PDP11 BBC BASIC for Bell Unix v5/v6/v7 and BSD Unix up to v2.9; bbcpdp.zip - Source archive with demos...
10 months ago

The 40x files are 1K files with each 40-character row running 'naturally' 40-character offsets. The 64x files are 2K files with each row padded to 64 bytes,...
12 months ago

MODE 13 is the unofficial title of a low-resolution screen MODE, selectable with the *MODE command or the NewModes sideways ROM module.
22 months ago

bbcbasic · bbcpdp.zip · dbit.com, BBC BASIC for PDP11 Unix v5/v6/v7. Archive Ersatz11 Emulator. Ersatz11 running RT11...
27 months ago

28to32/gif wr/R 32K DL/ BuildMOS (L) wr/R EEPROM/htm wr/R JoinROM/htm wr/R MasterY2K wr/R MegaROM/htm wr/R MegaROM/jpg wr/R MegaROMt/jpg wr/R MOS321/rom wr/...
35 months ago

Controls which output device or devices receive the characters sent to OSWRCH. The value of X is made up as follows:
36 months ago

The standard 8x5 keyboard matrix can be extended with dedicated keys to perform shift keypresses, for example CAPS and DELETE.
37 months ago

Z80 BBC BASIC for the ZX Spectrum. MDFS::Software.Spectrum.BBCBasic.Docs.Screen/htm, Search. Spectrum running BBC BASIC BBC BASIC on a Spectrum.
37 months ago