The Hobbit (v1.0): Routine at 805D

PRINT (805D) switches on copying of the story window to a ZX Printer (7B15), by setting $B5E3 to 1, but only if a printer is attached: bit 6 of port $FB is 0 when one is. NOPRINT (8067) sets $B5E3 to 0.

The test for the printer has a curious slip: when no printer is attached, the JR NZ at 805F jumps to $8069, which is in the middle of the LD ($B5E3),A instruction. The bytes there are executed as EX (SP),HL and OR L before execution reaches 806B. In my tests the game carried on normally after PRINT with no printer, so the damage appears to be harmless in practice.

PRINT (805D) switches on copying of the story window to a ZX Printer (7B15), by setting $B5E3 to 1, but only if a printer is attached: bit 6 of port $FB is 0 when one is. NOPRINT (8067) sets $B5E3 to 0. The test for the printer has a curious slip: when no printer is attached, the JR NZ at 805F jumps to $8069, which is in the middle of the LD ($B5E3),A instruction. The bytes there are executed as EX (SP),HL and OR L before execution reaches 806B. In my tests the game carried on normally after PRINT with no printer, so the damage appears to be harmless in practice.
805D	IN A,($FB)	Read the ZX Printer's status port
805F	BIT 6,A	Is a printer actually attached (bit 6 clear means yes)?
8061	JR NZ,$806B	No printer: leave printing switched off (joins the shared ending below, via the mis-jump described in the bug note)
8063	LD A,$01	PRINT: switch printing on
8065	JR $8068	PRINT: switch printing on
8067	XOR A	NOPRINT: switch it off
8068	LD ($B5E3),A	NOPRINT: switch it off