Volex TTX2000 S Issue 1.2: Routine at 0FB2

0FB2: handle_keypress: Handle a keypress while in teletext mode.

Used by the routine at wait_and_decode_page.
handle_keypress	0FB2	CALL get_keypress	Get a keypress.
	0FB5	CP $0D	If key code equals 'enter' jump to display_menu.
	0FB7	JP Z,display_menu	If key code equals 'enter' jump to display_menu.
	0FBA	CP $50	Else if key code equals 'P' jump to enter_page_and_clear.
	0FBC	JP Z,enter_page_and_clear	Else if key code equals 'P' jump to enter_page_and_clear.
	0FBF	CP $43	Else if key code equals 'C' jump to select_channel.
	0FC1	JP Z,select_channel	Else if key code equals 'C' jump to select_channel.
	0FC4	CP $48	Else if key code equals 'H' jump to hold_page.
	0FC6	JP Z,hold_page	Else if key code equals 'H' jump to hold_page.
	0FC9	CP $54	Else if key code equals 'T' jump to handle_keypress_0.
	0FCB	JR Z,handle_keypress_0	Else if key code equals 'T' jump to handle_keypress_0.
	0FCD	CP $52	Else if key code equals 'R' jump to toggle_reveal.
	0FCF	JP Z,toggle_reveal	Else if key code equals 'R' jump to toggle_reveal.
	0FD2	CP $42	Else if key code equals 'B' jump to toggle_bright.
	0FD4	JP Z,toggle_bright	Else if key code equals 'B' jump to toggle_bright.
	0FD7	CP $45	Else if key code equals 'E' jump to address in exit_pointer.
	0FD9	JP NZ,handle_keypress_1
	0FDC	LD HL,(exit_pointer)
	0FDF	JP (HL)
handle_keypress_0	0FE0	LD HL,(telesoftware_pointer)	Jump to address in telesoftware_pointer.
	0FE3	JP (HL)	Jump to address in telesoftware_pointer.
handle_keypress_1	0FE4	CP $5A	Else if key code equals 'Z' jump to address in print_pointer.
	0FE6	JR NZ,handle_keypress_2
	0FE8	LD HL,(print_pointer)
	0FEB	JP (HL)
handle_keypress_2	0FEC	CP $53	Else if key code equals 'S' set save_return_pointer to address of wait_and_decode_page and jump to address in save_page_pointer (copy of save_routine in main RAM).
	0FEE	JR NZ,handle_keypress_3
	0FF0	LD HL,wait_and_decode_page
	0FF3	LD (save_return_pointer),HL
	0FF6	LD HL,(save_page_pointer)
	0FF9	JP (HL)
handle_keypress_3	0FFA	RET	Else return.