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(MESS) phunsy : added preliminary quickload support

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This commit is contained in:
Robbbert 2014-01-13 15:14:46 +00:00
parent b548313176
commit a76a286fdb
1 changed files with 76 additions and 21 deletions
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97
src/mess/drivers/phunsy.c
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@ -22,6 +22,7 @@
#include "sound/speaker.h"
#include "imagedev/cassette.h"
#include "sound/wave.h"
#include "imagedev/snapquik.h"
#define LOG 1
@ -31,11 +32,12 @@ class phunsy_state : public driver_device
{
public:
phunsy_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_speaker(*this, "speaker"),
m_cass(*this, "cassette"),
m_videoram(*this, "videoram") { }
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_speaker(*this, "speaker")
, m_cass(*this, "cassette")
, m_p_videoram(*this, "videoram")
{ }
DECLARE_READ8_MEMBER( phunsy_data_r );
DECLARE_WRITE8_MEMBER( phunsy_1800_w );
@ -44,19 +46,20 @@ public:
DECLARE_WRITE8_MEMBER( kbd_put );
DECLARE_READ8_MEMBER(cass_r);
DECLARE_WRITE_LINE_MEMBER(cass_w);
DECLARE_QUICKLOAD_LOAD_MEMBER(phunsy);
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
private:
const UINT8 *m_p_chargen;
UINT8 m_u_bank;
UINT8 m_data_out;
UINT8 m_keyboard_input;
UINT8 m_q_bank;
UINT8 m_u_bank;
UINT8 m_ram_1800[0x800];
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
required_device<cpu_device> m_maincpu;
required_device<speaker_sound_device> m_speaker;
required_device<cassette_image_device> m_cass;
required_shared_ptr<UINT8> m_videoram;
required_shared_ptr<UINT8> m_p_videoram;
virtual void palette_init();
};
@ -79,11 +82,11 @@ READ8_MEMBER( phunsy_state::cass_r )
static ADDRESS_MAP_START(phunsy_mem, AS_PROGRAM, 8, phunsy_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x0000, 0x07ff) AM_ROM
AM_RANGE( 0x0800, 0x0fff) AM_RAM
AM_RANGE( 0x1000, 0x17ff) AM_RAM AM_SHARE("videoram") // Video RAM
AM_RANGE( 0x1800, 0x1fff) AM_RAM_WRITE( phunsy_1800_w ) AM_ROMBANK("bank1") // Banked RAM/ROM
AM_RANGE( 0x4000, 0xffff) AM_RAMBANK("bank2") // Banked RAM
AM_RANGE(0x0000, 0x07ff) AM_ROM
AM_RANGE(0x0800, 0x0fff) AM_RAM
AM_RANGE(0x1000, 0x17ff) AM_RAM AM_SHARE("videoram") // Video RAM
AM_RANGE(0x1800, 0x1fff) AM_RAM_WRITE( phunsy_1800_w ) AM_ROMBANK("bank1") // Banked RAM/ROM
AM_RANGE(0x4000, 0xffff) AM_RAMBANK("bank2") // Banked RAM
ADDRESS_MAP_END
@ -93,7 +96,7 @@ WRITE8_MEMBER( phunsy_state::phunsy_ctrl_w )
logerror("%s: phunsy_ctrl_w %02x\n", machine().describe_context(), data);
m_u_bank = data >> 4;
m_q_bank = data & 0x0F;
UINT8 q_bank = data & 0x0F;
switch( m_u_bank )
{
@ -109,7 +112,7 @@ WRITE8_MEMBER( phunsy_state::phunsy_ctrl_w )
break;
}
membank( "bank2" )->set_base( memregion("ram_4000")->base() + 0x4000 * m_q_bank );
membank( "bank2" )->set_base( memregion("ram_4000")->base() + 0x4000 * q_bank );
}
@ -140,7 +143,7 @@ WRITE8_MEMBER( phunsy_state::phunsy_data_w )
READ8_MEMBER( phunsy_state::phunsy_data_r )
{
UINT8 data;
UINT8 data = 0xff;
if (LOG)
logerror("%s: phunsy_data_r\n", machine().describe_context());
@ -200,10 +203,9 @@ void phunsy_state::machine_reset()
{
membank( "bank1" )->set_base( m_ram_1800 );
membank( "bank2" )->set_base( memregion("ram_4000")->base() );
m_u_bank = 0;
m_q_bank = 0;
m_keyboard_input = 0xFF;
m_u_bank = 0;
m_data_out = 0;
}
@ -237,7 +239,7 @@ UINT32 phunsy_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap,
for (x = ma; x < ma+64; x++)
{
chr = m_videoram[x];
chr = m_p_videoram[x];
if (BIT(chr, 7))
{
@ -288,6 +290,56 @@ static GFXDECODE_START( phunsy )
GFXDECODE_ENTRY( "chargen", 0x0000, phunsy_charlayout, 1, 3 )
GFXDECODE_END
// quickloads can start from various addresses, and the files have no header.
QUICKLOAD_LOAD_MEMBER( phunsy_state, phunsy )
{
address_space &space = m_maincpu->space(AS_PROGRAM);
UINT16 i;
UINT16 quick_addr = 0x1800;
UINT8 *quick_data;
int result = IMAGE_INIT_FAIL;
int quick_length = image.length();
if (quick_length > 0x4000)
{
image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too long");
image.message(" File too long");
}
else
{
quick_data = (UINT8*)malloc(quick_length);
if (!quick_data)
{
image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot open file");
image.message(" Cannot open file");
}
else
{
membank( "bank1" )->set_base( m_ram_1800 );
m_u_bank = 0;
UINT16 exec_addr = quick_addr + 2;
for (i = 0; i < quick_length; i++)
space.write_byte(i+quick_addr, quick_data[i]);
/* display a message about the loaded quickload */
image.message(" Quickload: size=%04X : exec=%04X",quick_length,exec_addr);
// Start the quickload
m_maincpu->set_state_int(S2650_R0, exec_addr>>8);
m_maincpu->set_state_int(S2650_R1, 0x08);
m_maincpu->set_state_int(S2650_R2, 0xe0);
m_maincpu->set_state_int(S2650_R3, 0x83);
m_maincpu->set_state_int(S2650_PC, exec_addr);
result = IMAGE_INIT_PASS;
}
free( quick_data );
}
return result;
}
static MACHINE_CONFIG_START( phunsy, phunsy_state )
/* basic machine hardware */
@ -319,6 +371,9 @@ static MACHINE_CONFIG_START( phunsy, phunsy_state )
/* Devices */
MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf)
MCFG_CASSETTE_ADD( "cassette", default_cassette_interface )
/* quickload */
MCFG_QUICKLOAD_ADD("quickload", phunsy_state, phunsy, "bin", 2)
MACHINE_CONFIG_END