Feb 11, 2024 · VDU 19 sets the logical colour, used in GCOL (VDU 18) or COLOUR (VDU 17) to the provided physical colour. The physical colour is set with a physical colour ...

Feb 15, 2024 · Description. This statement sends a VDU 18 sequence to set the colour and action to be used by all subsequent graphics operations. It can set the foreground and ...

Jan 4, 2024 · INKEY and INKEY$ call OSBYTE &81. INKEY returns a character or -1 for no character, INKEY$ returns a one-character string or a null string if nothing returned.

Feb 15, 2024 · VDU is a BASIC statement to send characters to the screen, printer, serial port or other output device. It is usually used to generate VDU sequences that ...

Jul 4, 2024 · 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 ...

Sep 14, 2024 · The service entry is an entry point in a paged ROM that is called by the MOS, allowing the ROM to initialise, to claim and release resources, ...

Feb 2, 2024 · Acorn DFS is a simple filing system developed by Acorn Computer for its 8-bit microcomputer range. It provides storage for up to 31 files and 200 kilobytes ...

Jul 20, 2024 · OSBYTE performs various functions passing and returning up to two bytes of data. Contents. [hide]. 1 ...

Jun 22, 2024 · File copying programs, copy single or multiple files between same or different filing systems. Wiper (L), 1K, BBC BASIC, 1.00, Recursive file wiper. DateEnsure ...

Jan 4, 2024 · BBC BASIC is the BASIC language that is supplied with every BBC Micro. Originally developed by Roger Wilson for the BBC Microcomputer in 1981, ...