// Copyright (c) 1994 - 2023 kio@little-bat.de
// BSD-2-Clause license
// https://opensource.org/licenses/BSD-2-Clause


/*	ZX Spectrum +3:
	zxplus3, zxplus3_span
*/


const int  zxplus3_basemodel	  = zxplus3;
const cstr zxplus3_model_name	  = "ZX Spectrum +3";
const cstr zxplus3_rom_filename	  = "plus3_v41.rom";
const cstr zxplus3_kbd_filename	  = "plus3_kbd.png"; // black plastic keys
const cstr zxplus3_image_filename = "plus3.jpg";

const cstr zxplus3_model_name_span	   = "ZX Spectrum +3 (Spanish)";
const cstr zxplus3_rom_filename_span   = "plus3_span.rom";
const cstr zxplus3_kbd_filename_span   = "plus3_kbd.png"; // black plastic keys	TODO: spanish keyboard
const cstr zxplus3_image_filename_span = "plus3_span.jpg";

const bool zxplus3_has_floppy_drive = yes;
const bool zxplus3_has_tape_drive	= no;

// the following is common to all +2A / +3 models:

const bool zxplus3_has_port_7ffd			   = yes;
const bool zxplus3_has_port_1ffd			   = yes;
const bool zxplus3_has_ay_soundchip			   = yes;
const bool zxplus3_has_module_port			   = no;
const bool zxplus3_has_printer_port			   = yes;
const uint zxplus3_has_serial_ports			   = 2;
const uint zxplus3_has_joystick_ports		   = 2;
const bool zxplus3_has_kempston_joystick_port  = no;
const bool zxplus3_has_sinclair_joystick_ports = yes;

const uint32 zxplus3_cc_per_second = 3546900;
const uint32 zxplus3_cc_per_line   = 228; // 128 T screen, 24 T right border, 52 T hor. retrace, 24 T left border, o.Ä.
const uint	 zxplus3_lines_before_screen = 63; // identical to 32K rom machines
const uint	 zxplus3_lines_in_screen	 = 24 * 8;
const uint	 zxplus3_lines_after_screen	 = 56;

const uint32 zxplus3_rom_size  = 64 * 1024;
const uint32 zxplus3_ram_size  = 128 * 1024;
const uint32 zxplus3_page_size = 16 * 1024;

const uint32 zxplus3_tape_load_routine	= 0xC000 + 0x0556; // index in rom[] of tape load routine
const uint32 zxplus3_tape_save_routine	= 0xC000 + 0x04D0; // index in rom[] of tape save routine
const uint32 zxplus3_tape_load_ret_addr = 0xC000 + 0x053F; // index in rom[] of common exit

const uint32 zxplus3_contended_rampages = 0x0F000000;	 // ram#4,5,6,7 is contended		(+2A/+3)
const uint8	 zxplus3_waitmap			= 0xFE;			 // %11111110
const uint32 zxplus3_videoram_start_0	= 5 * 16 * 1024; // biased to ram[] start
const uint32 zxplus3_videoram_start_1	= 7 * 16 * 1024; // biased to ram[] start
const uint32 zxplus3_videoram_size		= 32 * 24 * (8 + 1);

const Sample zxplus3_earin_threshold_mic_lo = 0.05; // TODO: verify: earout=0 & micout=0 => non-loading setting
const Sample zxplus3_earin_threshold_mic_hi = 0.01; // TODO: verify: earout=0 & micout=1 => loadFromTape setting