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(MESS) msx.c: Some small fixes to the banking for the firmware in the fsa1wsx. (nw)

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This commit is contained in:
Wilbert Pol 2014-05-19 19:49:52 +00:00
parent d7433ea89f
commit 1ec4181f33
3 changed files with 16 additions and 10 deletions
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21
src/emu/bus/msx_slot/panasonic08.c
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@ -17,6 +17,7 @@ const device_type MSX_SLOT_PANASONIC08 = &device_creator<msx_slot_panasonic08_de
msx_slot_panasonic08_device::msx_slot_panasonic08_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, MSX_SLOT_PANASONIC08, "MSX Internal Panasonic08", tag, owner, clock, "msx_slot_panasonic08", __FILE__)
, msx_internal_slot_interface()
, m_nvram(*this, "nvram")
, m_region(NULL)
, m_region_offset(0)
, m_rom(NULL)
@ -27,11 +28,11 @@ msx_slot_panasonic08_device::msx_slot_panasonic08_device(const machine_config &m
m_selected_bank[i] = 0;
m_bank_base[i] = 0;
}
memset(m_sram, 0, sizeof(m_sram));
}
static MACHINE_CONFIG_FRAGMENT( panasonic08 )
MCFG_NVRAM_ADD_0FILL("nvram")
MACHINE_CONFIG_END
@ -66,11 +67,14 @@ void msx_slot_panasonic08_device::device_start()
fatalerror("Memory region '%s' is too small for the FS4600 firmware\n", m_region);
}
m_sram.resize(0x4000);
m_nvram->set_base((UINT8*)m_sram, 0x4000);
m_rom = m_rom_region->base() + m_region_offset;
save_item(NAME(m_selected_bank));
save_item(NAME(m_control));
save_item(NAME(m_sram));
machine().save().register_postload(save_prepost_delegate(FUNC(msx_slot_panasonic08_device::restore_banks), this));
@ -83,7 +87,7 @@ void msx_slot_panasonic08_device::map_bank(int bank)
if (m_selected_bank[bank] >= 0x80 && m_selected_bank[bank] < 0x84) // Are these banks were sram is present? Mirroring?
{
logerror("panasonic08: mapping bank %d to sram\n", bank);
m_bank_base[bank] = m_sram;
m_bank_base[bank] = m_sram + (((m_selected_bank[bank] & 0x7f) * 0x2000) & 0x3fff);
}
else
{
@ -127,9 +131,10 @@ WRITE8_MEMBER(msx_slot_panasonic08_device::write)
UINT8 bank = m_selected_bank[offset >> 13];
if (bank >= 0x80 && bank < 0x84) // Are these banks were sram is present? Mirroring?
{
logerror("panasonic08: writing %02x to sram %04x\n", data, offset & 0x1fff);
m_sram[offset & 0x1fff] = data;
logerror("msx_slot_panasonic08: writing %02x to sram %04x, bank = %02x\n", data, offset & 0x1fff, bank);
m_sram[((bank & 0x01) * 0x2000) + (offset & 0x1fff)] = data;
}
return;
}
switch (offset)
@ -149,7 +154,7 @@ WRITE8_MEMBER(msx_slot_panasonic08_device::write)
map_bank(2);
break;
case 0x6c00:
case 0x6c00: /* Switches 0x6000-0x7FFF */
m_selected_bank[3] = data;
map_bank(3);
break;
@ -159,7 +164,7 @@ WRITE8_MEMBER(msx_slot_panasonic08_device::write)
map_bank(4);
break;
case 0x7800:
case 0x7800: /* Switches 0xA000-0xBFFF */
m_selected_bank[5] = data;
map_bank(5);
break;
@ -169,7 +174,7 @@ WRITE8_MEMBER(msx_slot_panasonic08_device::write)
break;
default:
logerror("Unhandled write %02x to %04x\n", data, offset);
logerror("msx_slot_panasonic08: Unhandled write %02x to %04x\n", data, offset);
break;
}
}

4
src/emu/bus/msx_slot/panasonic08.h
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@ -2,6 +2,7 @@
#define __MSX_SLOT_PANASONIC08_H
#include "slot.h"
#include "machine/nvram.h"
extern const device_type MSX_SLOT_PANASONIC08;
@ -29,13 +30,14 @@ public:
void restore_banks();
private:
required_device<nvram_device> m_nvram;
const char *m_region;
UINT32 m_region_offset;
const UINT8 *m_rom;
UINT8 m_selected_bank[8];
const UINT8 *m_bank_base[8];
UINT8 m_control;
UINT8 m_sram[0x2000];
dynamic_buffer m_sram;
void map_bank(int bank);
};

1
src/mess/drivers/msx.c
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@ -47,7 +47,6 @@
** - expert3i: IDE not emulated
** - expert3t: Turbo not emulated
** - expertac: Does not boot
** - fsa1wsx: Firmware not emulated
** - fsa1wx: Firmware not emulated
** - fsa1wx: Floppy not emulated
** - fsa1wxa: Firmware not emulated