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diff --git a/INSTRUCTION b/INSTRUCTION new file mode 100644 index 0000000..0c3b021 --- /dev/null +++ b/INSTRUCTION @@ -0,0 +1,93 @@ + 3dsspec + Nintendo 3DS Spectrum emulator. + + Copyright (C) 2021 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 3 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/> + +================================================================================ + +1. General Operation +-------------------- + +You will be presented with the emulated spectrum screen in the upper display +and a keyboard on the touch display. Press the keys to interact with the +emulation. Click on the MENU banner to display the main menu. + + +2. The Main Menu +---------------- + +The main menu shows the following options: + + Reset Spectrum - Reset the spectrum. + Load TAP File - Load a TAP file from the SD card. To load the + TAP file enter LOAD "" in the emulator. + Configure - Configures the emulator. See the following + section. + Map Joypad to Keys - Allows you to define what keys on the keyboard + the joypad and buttons will press. + Save Memory Snapshot - Save a snapshot of the running state. + Load Memory Snapshot - Load a previously saved memory snapshot. + Save Joypad/Key State - Saves the current joypad to keys mapping. + Load Joypad/Key State - Loads a saved joypad/key state. + Debug - Displays a debug menu. See a later section + for details. + Exit 3DSSPEC - Exits the emulator. + Cancel - Cancel the menu and go back to the emulation. + + +3. Configuration +---------------- + +The configuration screen gives you the following options. + + Sticky Shift - Whether the two shift keys are 'sticky'. + Sticky means that when pressed the key stays + pressed until they are pressed again. + Load Default Snapshot - Whether the emulator attempts to load a + memory snapshot called AUTO when it starts. + Sound - Whether to play sound. + + +4. Debug Menu +------------- + +The debug menu gives you access to various debug options. The menu has the +following options: + + Enable Debug Output - Enables debug output. When selected it + prompts for a host and port number and + connects to that host and port to send debug + messages. + Disable Debug Output - Disables the debug output. + Disassembler - Displays a disassembly of the spectrum's + memory. Press the joypad up/down to decrement + and increment the displayed address. Press + the shoulder buttons to move in pages. Press + the A button to enter an address. Press the + START button to exit. + Memory Viewer - Displays a hex dump of the spectrum's memory. + Press the joypad up/down to decrement and + increment the displayed address. Press the + shoulder buttons to move in pages. Press the + A button to enter an address. Press the START + button to exit. + CPU Info - Displays a screen with the Z80's registers. + Press the shoulder buttons to cycle which + register pointer is dumped to the screen. + Press the A button to execute the next + instruction. Hold the B button to execute + quickly. Press the START button to exit. + |