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// Copyright 2010 Segher Boessenkool <segher@kernel.crashing.org>
// Licensed under the terms of the GNU GPL, version 2
// http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
// IOA not connected
// IOB0 CS#1 = a3; b3 = ROMCS#; o3 = cart CS1#
// IOB1 CS#2 = cart CS2#
// IOB2 CS#3 = a0; b0 = cart det (high if cart, pull to ROMCS#); o0 = sys CS#
// IOB3 reset switch
// IOB4 cart front 24?
// IOB5 power off
// IOB6 power off switch
// IOB7 power on switch
// IOC0 JP13 \ version jumper
// IOC1 JP12 |
// IOC2 JP11 |
// IOC3 JP10 /
// IOC4 JP14 logo
// IOC5 test point
// IOC6 amp power
// IOC7 system reset
// IOC8 controller pin 8 controller select, high active
// IOC9 controller pin 5 " "
// IOC10 controller pin 9 (also extint1)
// IOC11 N/C?
// IOC12 controller pin 6 (also extint2)
// IOC13 controller pins 4 and 7 ANDed together, pullups
// IOC14 controller pin 2, through a buffer
// IOC15 power / charger / whatever enable (top left)
// controller:
// pin1 ground
// pin2 system->controller
// pin3 power
// pin4 controller->system
// pin5 *
// pin6 *
// pin7 controller->system
// pin8 *
// pin9 *
// controller messages:
// 90+X: colour keys: 8=red 4=yellow 2=blue 1=green 0=release
// a0+X: other keys: 1=ok 2=quit 3=help 4=abc 0=release (1 for pen as well)
// 80+X: up: 3..7, 0=release stick (keypad uses 3)
// 88+X: down: 3..7
// c8+X: left: 3..7
// c0+X: right: 3..7
#include <stdio.h>
#include "types.h"
#include "emu.h"
#include "platform.h"
#include "board.h"
static int trace_gpio = 0;
static void init(void)
{
if (mem[0x5675c] == 0x9311 && mem[0x5675e] == 0x4240 && // Winnie
mem[0x5675f] == 0x4e44)
board->idle_pc = 0x5675c;
// else
// board->idle_pc = 0x4003a; // studio, FIXME
}
static u32 bit(u16 x, u32 n)
{
return (x >> n) & 1;
}
static u16 gpio(u32 n, u16 what, u16 push, u16 pull, u16 special)
{
//if (n == 2) what &= ~0x1400;
//if (n == 2) what |= 0x1400;
if (trace_gpio) {
static u16 old[3][4];
u32 i;
for (i = 0; i < (n == 1 ? 8 : 16); i++)
if (bit(what, i) != bit(old[n][0], i)
|| bit(push, i) != bit(old[n][1], i)
|| bit(pull, i) != bit(old[n][2], i)
|| bit(special, i) != bit(old[n][3], i))
printf("IO%c%d data=%x push=%x pull=%x special=%x\n",
'A' + n, i, bit(what, i), bit(push, i), bit(pull, i), bit(special, i));
old[n][0] = what;
old[n][1] = push;
old[n][2] = pull;
old[n][3] = special;
}
// printf("IO%c data=%04x push=%04x pull=%04x special=%04x\n",
// 'A' + n, what, push, pull, special);
return what;
}
struct board board_V_X = {
.use_centered_coors = 1,
.init = init,
.gpio = gpio
};
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