Volex TTX2000 S Issue 1.2: Routine at 1293

1293: restore_number: Copy number_display_buffer into page number display.

Used by the routines at select_channel and hold_page.
restore_number	1293	PUSH BC	Preserve registers.
	1294	PUSH DE
	1295	PUSH HL
	1296	LD HL,number_display_buffer	Copy 8 bytes from number_display_buffer to page display buffer.
	1299	LD DE,(page_display_buffer_pointer)
	129D	LD BC,$0008
	12A0	LDIR
	12A2	POP HL	Restore registers and return.
	12A3	POP DE
	12A4	POP BC
	12A5	RET