MDFS::Software.Spectrum.BBCBasic.Docs.info.htm

BBC BASIC for the Sinclair Spectrum

VDU Interface

All BBC MOS VDU codes are queued correctly. Currently, only text VDU codes are acted on.

0	NULL	8	Cursor left	16		24,x1,x2,y1,y2,x3,x4,y3,y4
1,n		9	Cursor right	17,n	COLOUR n	25,k,x1,x2,y1,y2
2		10	Cursor down	18,a,c		26	Reset window
3		11	Cursor up	19,l,p,r,g,b		27	Escape
4		12	CLS	20	Reset colours	28,x1,y1,x2,y2
5		13	CR	21	Disable VDU	29,x1,x2,y1,y2
6	Enable VDU	14		22,n	MODE	30	Home cursor
7		15		23,x,a,b,c,d,e,f,g,h	Define character	31,x,y	TAB(x,y)

File Interface

Filenames are [d:]filename. If d: is present it can be T: for Tape or 1: to 8: for microdrive 1 to 8. Currently, only T: is supported. Microdrive support is being tested.

MOS Interface

Oscli, Osbyte, Osword

Memory Map

Basic can use all memory from PAGE to HIMEM.

Accessing ZX BASIC

Holding Z on Reset will enter ZX BASIC instead of BBC BASIC.

HOME BBCBASIC ZX SPECTRUM Z80

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