Routines
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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
0FBA CP $50 Else if key code equals 'P' jump to enter_page_and_clear.
0FBC JP Z,enter_page_and_clear
0FBF CP $43 Else if key code equals 'C' jump to select_channel.
0FC1 JP Z,select_channel
0FC4 CP $48 Else if key code equals 'H' jump to hold_page.
0FC6 JP Z,hold_page
0FC9 CP $54 Else if key code equals 'T' jump to handle_keypress_0.
0FCB JR Z,handle_keypress_0
0FCD CP $52 Else if key code equals 'R' jump to toggle_reveal.
0FCF JP Z,toggle_reveal
0FD2 CP $42 Else if key code equals 'B' jump to toggle_bright.
0FD4 JP Z,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)
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.
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