659 lines
13 KiB
C
659 lines
13 KiB
C
/*
|
|
* libtilemcore - Graphing calculator emulation library
|
|
*
|
|
* Copyright (C) 2001 Solignac Julien
|
|
* Copyright (C) 2004-2012 Benjamin Moody
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public License
|
|
* as published by the Free Software Foundation; either version 2.1 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <tilem.h>
|
|
|
|
#include "xs.h"
|
|
|
|
static void set_lcd_wait_timer(TilemCalc* calc)
|
|
{
|
|
static const int delaytime[8] = { 48, 112, 176, 240,
|
|
304, 368, 432, 496 };
|
|
int i;
|
|
|
|
switch (calc->hwregs[PORT20] & 3) {
|
|
case 0:
|
|
return;
|
|
case 1:
|
|
i = (calc->hwregs[PORT2F] & 3);
|
|
break;
|
|
case 2:
|
|
i = ((calc->hwregs[PORT2F] >> 2) & 7);
|
|
break;
|
|
default:
|
|
i = ((calc->hwregs[PORT2F] >> 5) & 7);
|
|
break;
|
|
}
|
|
|
|
tilem_z80_set_timer(calc, TIMER_LCD_WAIT, delaytime[i], 0, 0);
|
|
calc->hwregs[LCD_WAIT] = 1;
|
|
}
|
|
|
|
byte xs_z80_in(TilemCalc* calc, dword port)
|
|
{
|
|
/* FIXME: measure actual levels */
|
|
static const byte battlevel[4] = { 33, 39, 36, 43 };
|
|
byte v;
|
|
unsigned int f;
|
|
|
|
switch(port&0xff) {
|
|
case 0x00:
|
|
v = tilem_linkport_get_lines(calc);
|
|
v |= (calc->linkport.lines << 4);
|
|
return(v);
|
|
|
|
case 0x01:
|
|
return(tilem_keypad_read_keys(calc));
|
|
|
|
case 0x02:
|
|
v = battlevel[calc->hwregs[PORT4] >> 6];
|
|
return((calc->battery >= v ? 0xc1 : 0xc0)
|
|
| (calc->hwregs[LCD_WAIT] ? 0 : 2)
|
|
| (calc->flash.unlock << 2));
|
|
|
|
case 0x03:
|
|
return(calc->hwregs[PORT3]);
|
|
|
|
case 0x04:
|
|
v = (calc->keypad.onkeydown ? 0x00 : 0x08);
|
|
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_ON_KEY)
|
|
v |= 0x01;
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_TIMER1)
|
|
v |= 0x02;
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_TIMER2)
|
|
v |= 0x04;
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_LINK_ACTIVE)
|
|
v |= 0x10;
|
|
|
|
if (calc->usertimers[0].status & TILEM_USER_TIMER_FINISHED)
|
|
v |= 0x20;
|
|
if (calc->usertimers[1].status & TILEM_USER_TIMER_FINISHED)
|
|
v |= 0x40;
|
|
if (calc->usertimers[2].status & TILEM_USER_TIMER_FINISHED)
|
|
v |= 0x80;
|
|
|
|
return(v);
|
|
|
|
case 0x05:
|
|
return(calc->hwregs[PORT5] & 0x0f);
|
|
|
|
case 0x06:
|
|
return(calc->hwregs[PORT6]);
|
|
|
|
case 0x07:
|
|
return(calc->hwregs[PORT7]);
|
|
|
|
case 0x08:
|
|
return(calc->hwregs[PORT8]);
|
|
|
|
case 0x09:
|
|
f = tilem_linkport_get_assist_flags(calc);
|
|
|
|
if (f & (TILEM_LINK_ASSIST_READ_BUSY
|
|
| TILEM_LINK_ASSIST_WRITE_BUSY))
|
|
v = 0x00;
|
|
else
|
|
v = 0x20;
|
|
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_LINK_READ)
|
|
v |= 0x01;
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_LINK_IDLE)
|
|
v |= 0x02;
|
|
if (calc->z80.interrupts & TILEM_INTERRUPT_LINK_ERROR)
|
|
v |= 0x04;
|
|
if (f & TILEM_LINK_ASSIST_READ_BUSY)
|
|
v |= 0x08;
|
|
if (f & TILEM_LINK_ASSIST_READ_BYTE)
|
|
v |= 0x10;
|
|
if (f & (TILEM_LINK_ASSIST_READ_ERROR
|
|
| TILEM_LINK_ASSIST_WRITE_ERROR))
|
|
v |= 0x40;
|
|
if (f & TILEM_LINK_ASSIST_WRITE_BUSY)
|
|
v |= 0x80;
|
|
|
|
calc->z80.interrupts &= ~TILEM_INTERRUPT_LINK_ERROR;
|
|
|
|
return(v);
|
|
|
|
case 0x0A:
|
|
v = calc->linkport.assistlastbyte;
|
|
tilem_linkport_read_byte(calc);
|
|
return(v);
|
|
|
|
case 0x0E:
|
|
return(calc->hwregs[PORTE] & 3);
|
|
|
|
case 0x0F:
|
|
return(calc->hwregs[PORTF] & 3);
|
|
|
|
case 0x10:
|
|
case 0x12:
|
|
calc->z80.clock += calc->hwregs[LCD_PORT_DELAY];
|
|
set_lcd_wait_timer(calc);
|
|
return(tilem_lcd_t6a04_status(calc));
|
|
|
|
case 0x11:
|
|
case 0x13:
|
|
calc->z80.clock += calc->hwregs[LCD_PORT_DELAY];
|
|
set_lcd_wait_timer(calc);
|
|
return(tilem_lcd_t6a04_read(calc));
|
|
|
|
case 0x15:
|
|
return(0x33); /* ??? */
|
|
|
|
case 0x1C:
|
|
return(tilem_md5_assist_get_value(calc));
|
|
|
|
case 0x1D:
|
|
return(tilem_md5_assist_get_value(calc) >> 8);
|
|
|
|
case 0x1E:
|
|
return(tilem_md5_assist_get_value(calc) >> 16);
|
|
|
|
case 0x1F:
|
|
return(tilem_md5_assist_get_value(calc) >> 24);
|
|
|
|
case 0x20:
|
|
return(calc->hwregs[PORT20] & 3);
|
|
|
|
case 0x21:
|
|
return(calc->hwregs[PORT21] & 0x33);
|
|
|
|
case 0x22:
|
|
return(calc->hwregs[PORT22]);
|
|
|
|
case 0x23:
|
|
return(calc->hwregs[PORT23]);
|
|
|
|
case 0x25:
|
|
return(calc->hwregs[PORT25]);
|
|
|
|
case 0x26:
|
|
return(calc->hwregs[PORT26]);
|
|
|
|
case 0x27:
|
|
return(calc->hwregs[PORT27]);
|
|
|
|
case 0x28:
|
|
return(calc->hwregs[PORT28]);
|
|
|
|
case 0x29:
|
|
return(calc->hwregs[PORT29]);
|
|
|
|
case 0x2A:
|
|
return(calc->hwregs[PORT2A]);
|
|
|
|
case 0x2B:
|
|
return(calc->hwregs[PORT2B]);
|
|
|
|
case 0x2C:
|
|
return(calc->hwregs[PORT2C]);
|
|
|
|
case 0x2D:
|
|
return(calc->hwregs[PORT2D] & 3);
|
|
|
|
case 0x2E:
|
|
return(calc->hwregs[PORT2E]);
|
|
|
|
case 0x2F:
|
|
return(calc->hwregs[PORT2F]);
|
|
|
|
case 0x30:
|
|
return(calc->usertimers[0].frequency);
|
|
case 0x31:
|
|
return(calc->usertimers[0].status);
|
|
case 0x32:
|
|
return(tilem_user_timer_get_value(calc, 0));
|
|
|
|
case 0x33:
|
|
return(calc->usertimers[1].frequency);
|
|
case 0x34:
|
|
return(calc->usertimers[1].status);
|
|
case 0x35:
|
|
return(tilem_user_timer_get_value(calc, 1));
|
|
|
|
case 0x36:
|
|
return(calc->usertimers[2].frequency);
|
|
case 0x37:
|
|
return(calc->usertimers[2].status);
|
|
case 0x38:
|
|
return(tilem_user_timer_get_value(calc, 2));
|
|
|
|
case 0x0B:
|
|
case 0x0C:
|
|
case 0x0D:
|
|
case 0x14:
|
|
case 0x16:
|
|
case 0x17:
|
|
case 0x18:
|
|
case 0x19:
|
|
case 0x1A:
|
|
case 0x1B:
|
|
case 0x39:
|
|
case 0x3A:
|
|
case 0x3B:
|
|
case 0x3C:
|
|
case 0x3D:
|
|
case 0x3E:
|
|
case 0x3F:
|
|
return(0);
|
|
}
|
|
|
|
return(0xff);
|
|
}
|
|
|
|
|
|
static void setup_mapping(TilemCalc* calc)
|
|
{
|
|
unsigned int pageA, pageB, pageC;
|
|
|
|
if (calc->hwregs[PORT6] & 0x80)
|
|
pageA = (0x80 | (calc->hwregs[PORT6] & 7));
|
|
else
|
|
pageA = (calc->hwregs[PORT6] & 0x7f);
|
|
|
|
if (calc->hwregs[PORT7] & 0x80)
|
|
pageB = (0x80 | (calc->hwregs[PORT7] & 7));
|
|
else
|
|
pageB = (calc->hwregs[PORT7] & 0x7f);
|
|
|
|
pageC = (0x80 | (calc->hwregs[PORT5] & 7));
|
|
|
|
if (calc->hwregs[PORT4] & 1) {
|
|
calc->mempagemap[1] = (pageA & ~1);
|
|
calc->mempagemap[2] = (pageA | 1);
|
|
calc->mempagemap[3] = pageB;
|
|
}
|
|
else {
|
|
calc->mempagemap[1] = pageA;
|
|
calc->mempagemap[2] = pageB;
|
|
calc->mempagemap[3] = pageC;
|
|
}
|
|
}
|
|
|
|
static void setup_clockdelays(TilemCalc* calc)
|
|
{
|
|
byte lcdport = calc->hwregs[PORT29 + (calc->hwregs[PORT20] & 3)];
|
|
byte memport = calc->hwregs[PORT2E];
|
|
|
|
if (!(lcdport & 1))
|
|
memport &= ~0x07;
|
|
if (!(lcdport & 2))
|
|
memport &= ~0x70;
|
|
|
|
calc->hwregs[FLASH_EXEC_DELAY] = (memport & 1);
|
|
calc->hwregs[FLASH_READ_DELAY] = ((memport >> 1) & 1);
|
|
calc->hwregs[FLASH_WRITE_DELAY] = ((memport >> 2) & 1);
|
|
|
|
calc->hwregs[RAM_EXEC_DELAY] = ((memport >> 4) & 1);
|
|
calc->hwregs[RAM_READ_DELAY] = ((memport >> 5) & 1);
|
|
calc->hwregs[RAM_WRITE_DELAY] = ((memport >> 6) & 1);
|
|
|
|
calc->hwregs[LCD_PORT_DELAY] = (lcdport >> 2);
|
|
}
|
|
|
|
void xs_z80_out(TilemCalc* calc, dword port, byte value)
|
|
{
|
|
static const int tmrvalues[4] = { 1953, 4395, 6836, 9277 };
|
|
int t, r;
|
|
unsigned int mode;
|
|
|
|
switch(port&0xff) {
|
|
case 0x00:
|
|
tilem_linkport_set_lines(calc, value);
|
|
break;
|
|
|
|
case 0x01:
|
|
tilem_keypad_set_group(calc, value);
|
|
break;
|
|
|
|
case 0x03:
|
|
if (value & 0x01) {
|
|
calc->keypad.onkeyint = 1;
|
|
}
|
|
else {
|
|
calc->z80.interrupts &= ~TILEM_INTERRUPT_ON_KEY;
|
|
calc->keypad.onkeyint = 0;
|
|
}
|
|
|
|
if (!(value & 0x02))
|
|
calc->z80.interrupts &= ~TILEM_INTERRUPT_TIMER1;
|
|
|
|
if (!(value & 0x04))
|
|
calc->z80.interrupts &= ~TILEM_INTERRUPT_TIMER2;
|
|
|
|
if (value & 0x06) {
|
|
calc->usertimers[0].status &= ~TILEM_USER_TIMER_NO_HALT_INT;
|
|
calc->usertimers[1].status &= ~TILEM_USER_TIMER_NO_HALT_INT;
|
|
calc->usertimers[2].status &= ~TILEM_USER_TIMER_NO_HALT_INT;
|
|
}
|
|
else {
|
|
calc->usertimers[0].status |= TILEM_USER_TIMER_NO_HALT_INT;
|
|
calc->usertimers[1].status |= TILEM_USER_TIMER_NO_HALT_INT;
|
|
calc->usertimers[2].status |= TILEM_USER_TIMER_NO_HALT_INT;
|
|
}
|
|
|
|
mode = calc->linkport.mode;
|
|
if (value & 0x10)
|
|
mode |= TILEM_LINK_MODE_INT_ON_ACTIVE;
|
|
else
|
|
mode &= ~TILEM_LINK_MODE_INT_ON_ACTIVE;
|
|
|
|
tilem_linkport_set_mode(calc, mode);
|
|
|
|
calc->poweronhalt = ((value & 8) >> 3);
|
|
calc->hwregs[PORT3] = value;
|
|
break;
|
|
|
|
case 0x04:
|
|
calc->hwregs[PORT4] = value;
|
|
|
|
t = tmrvalues[(value & 6) >> 1];
|
|
tilem_z80_set_timer_period(calc, TIMER_INT1, t);
|
|
tilem_z80_set_timer_period(calc, TIMER_INT2A, t);
|
|
tilem_z80_set_timer_period(calc, TIMER_INT2B, t);
|
|
|
|
setup_mapping(calc);
|
|
break;
|
|
|
|
case 0x05:
|
|
calc->hwregs[PORT5] = value & 0x0f;
|
|
setup_mapping(calc);
|
|
break;
|
|
|
|
case 0x06:
|
|
calc->hwregs[PORT6] = value;
|
|
setup_mapping(calc);
|
|
break;
|
|
|
|
case 0x07:
|
|
calc->hwregs[PORT7] = value;
|
|
setup_mapping(calc);
|
|
break;
|
|
|
|
case 0x08:
|
|
calc->hwregs[PORT8] = value;
|
|
|
|
mode = calc->linkport.mode;
|
|
|
|
if (value & 0x01)
|
|
mode |= TILEM_LINK_MODE_INT_ON_READ;
|
|
else
|
|
mode &= ~TILEM_LINK_MODE_INT_ON_READ;
|
|
|
|
if (value & 0x02)
|
|
mode |= TILEM_LINK_MODE_INT_ON_IDLE;
|
|
else
|
|
mode &= ~TILEM_LINK_MODE_INT_ON_IDLE;
|
|
|
|
if (value & 0x04)
|
|
mode |= TILEM_LINK_MODE_INT_ON_ERROR;
|
|
else
|
|
mode &= ~TILEM_LINK_MODE_INT_ON_ERROR;
|
|
|
|
if (value & 0x80)
|
|
mode &= ~TILEM_LINK_MODE_ASSIST;
|
|
else
|
|
mode |= TILEM_LINK_MODE_ASSIST;
|
|
|
|
tilem_linkport_set_mode(calc, mode);
|
|
break;
|
|
|
|
case 0x09:
|
|
calc->hwregs[PORT9] = value;
|
|
break;
|
|
|
|
case 0x0A:
|
|
calc->hwregs[PORTA] = value;
|
|
break;
|
|
|
|
case 0x0B:
|
|
calc->hwregs[PORTB] = value;
|
|
break;
|
|
|
|
case 0x0C:
|
|
calc->hwregs[PORTC] = value;
|
|
break;
|
|
|
|
case 0x0D:
|
|
if (!(calc->hwregs[PORT8] & 0x80))
|
|
tilem_linkport_write_byte(calc, value);
|
|
break;
|
|
|
|
case 0x0E:
|
|
calc->hwregs[PORTE] = value;
|
|
break;
|
|
|
|
case 0x0F:
|
|
calc->hwregs[PORTF] = value;
|
|
break;
|
|
|
|
case 0x10:
|
|
case 0x12:
|
|
calc->z80.clock += calc->hwregs[LCD_PORT_DELAY];
|
|
set_lcd_wait_timer(calc);
|
|
tilem_lcd_t6a04_control(calc, value);
|
|
break;
|
|
|
|
case 0x11:
|
|
case 0x13:
|
|
calc->z80.clock += calc->hwregs[LCD_PORT_DELAY];
|
|
set_lcd_wait_timer(calc);
|
|
tilem_lcd_t6a04_write(calc, value);
|
|
break;
|
|
|
|
case 0x14:
|
|
if (calc->hwregs[PROTECTSTATE] == 7) {
|
|
if (value & 1)
|
|
tilem_message(calc, "Flash unlocked");
|
|
else
|
|
tilem_message(calc, "Flash locked");
|
|
calc->flash.unlock = value&1;
|
|
}
|
|
else {
|
|
tilem_warning(calc, "Writing to protected port 14");
|
|
}
|
|
break;
|
|
|
|
case 0x18:
|
|
case 0x19:
|
|
case 0x1A:
|
|
case 0x1B:
|
|
case 0x1C:
|
|
case 0x1D:
|
|
r = (port & 0xff) - 0x18;
|
|
calc->md5assist.regs[r] >>= 8;
|
|
calc->md5assist.regs[r] |= (value << 24);
|
|
break;
|
|
|
|
case 0x1E:
|
|
calc->md5assist.shift = value & 0x1f;
|
|
break;
|
|
|
|
case 0x1F:
|
|
calc->md5assist.mode = value & 3;
|
|
break;
|
|
|
|
case 0x20:
|
|
calc->hwregs[PORT20] = value;
|
|
|
|
if (value & 3) {
|
|
tilem_z80_set_speed(calc, 15000);
|
|
}
|
|
else {
|
|
tilem_z80_set_speed(calc, 6000);
|
|
}
|
|
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x21:
|
|
if (calc->flash.unlock) {
|
|
calc->hwregs[PORT21] = value;
|
|
t = (value >> 4) & 3;
|
|
calc->hwregs[NO_EXEC_RAM_MASK] = (0x8000 << t) - 0x400;
|
|
calc->flash.overridegroup = value & 3;
|
|
}
|
|
else {
|
|
tilem_warning(calc, "Writing to protected port 21");
|
|
}
|
|
break;
|
|
|
|
case 0x22:
|
|
if (calc->flash.unlock) {
|
|
calc->hwregs[PORT22] = value;
|
|
}
|
|
else {
|
|
tilem_warning(calc, "Writing to protected port 22");
|
|
}
|
|
break;
|
|
|
|
case 0x23:
|
|
if (calc->flash.unlock) {
|
|
calc->hwregs[PORT23] = value;
|
|
}
|
|
else {
|
|
tilem_warning(calc, "Writing to protected port 23");
|
|
}
|
|
break;
|
|
|
|
case 0x25:
|
|
if (calc->flash.unlock) {
|
|
calc->hwregs[PORT25] = value;
|
|
calc->hwregs[NO_EXEC_RAM_LOWER] = value * 0x400;
|
|
}
|
|
else {
|
|
tilem_warning(calc, "Writing to protected port 25");
|
|
}
|
|
break;
|
|
|
|
case 0x26:
|
|
if (calc->flash.unlock) {
|
|
calc->hwregs[PORT26] = value;
|
|
calc->hwregs[NO_EXEC_RAM_UPPER] = value * 0x400;
|
|
}
|
|
else {
|
|
tilem_warning(calc, "Writing to protected port 26");
|
|
}
|
|
break;
|
|
|
|
case 0x27:
|
|
calc->hwregs[PORT27] = value;
|
|
break;
|
|
|
|
case 0x28:
|
|
calc->hwregs[PORT28] = value;
|
|
break;
|
|
|
|
case 0x29:
|
|
calc->hwregs[PORT29] = value;
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x2A:
|
|
calc->hwregs[PORT2A] = value;
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x2B:
|
|
calc->hwregs[PORT2B] = value;
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x2C:
|
|
calc->hwregs[PORT2C] = value;
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x2D:
|
|
calc->hwregs[PORT2D] = value;
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x2E:
|
|
calc->hwregs[PORT2E] = value;
|
|
setup_clockdelays(calc);
|
|
break;
|
|
|
|
case 0x2F:
|
|
calc->hwregs[PORT2F] = value;
|
|
break;
|
|
|
|
case 0x30:
|
|
tilem_user_timer_set_frequency(calc, 0, value);
|
|
break;
|
|
case 0x31:
|
|
tilem_user_timer_set_mode(calc, 0, value);
|
|
break;
|
|
case 0x32:
|
|
tilem_user_timer_start(calc, 0, value);
|
|
break;
|
|
|
|
case 0x33:
|
|
tilem_user_timer_set_frequency(calc, 1, value);
|
|
break;
|
|
case 0x34:
|
|
tilem_user_timer_set_mode(calc, 1, value);
|
|
break;
|
|
case 0x35:
|
|
tilem_user_timer_start(calc, 1, value);
|
|
break;
|
|
|
|
case 0x36:
|
|
tilem_user_timer_set_frequency(calc, 2, value);
|
|
break;
|
|
case 0x37:
|
|
tilem_user_timer_set_mode(calc, 2, value);
|
|
break;
|
|
case 0x38:
|
|
tilem_user_timer_start(calc, 2, value);
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
void xs_z80_ptimer(TilemCalc* calc, int id)
|
|
{
|
|
switch (id) {
|
|
case TIMER_INT1:
|
|
if (calc->hwregs[PORT3] & 0x02)
|
|
calc->z80.interrupts |= TILEM_INTERRUPT_TIMER1;
|
|
break;
|
|
|
|
case TIMER_INT2A:
|
|
case TIMER_INT2B:
|
|
if (calc->hwregs[PORT3] & 0x04)
|
|
calc->z80.interrupts |= TILEM_INTERRUPT_TIMER2;
|
|
break;
|
|
|
|
case TIMER_LCD_WAIT:
|
|
calc->hwregs[LCD_WAIT] = 0;
|
|
break;
|
|
}
|
|
}
|