mirror of
https://github.com/holub/mame
synced 2025-05-23 14:19:01 +03:00
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/**********************************************************************
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Commodore CBM-II Standard cartridge emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#include "cbm2_std.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type CBM2_STD = &device_creator<cbm2_standard_cartridge_device>;
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// cbm2_standard_cartridge_device - constructor
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//-------------------------------------------------
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cbm2_standard_cartridge_device::cbm2_standard_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, CBM2_STD, "CBM-II standard cartridge", tag, owner, clock, "cbm2_standard", __FILE__),
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device_cbm2_expansion_card_interface(mconfig, *this)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void cbm2_standard_cartridge_device::device_start()
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{
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}
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//-------------------------------------------------
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// cbm2_bd_r - cartridge data read
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//-------------------------------------------------
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UINT8 cbm2_standard_cartridge_device::cbm2_bd_r(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3)
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{
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if (!csbank1 && m_bank1_mask)
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{
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data = m_bank1[offset & m_bank1_mask];
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}
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else if (!csbank2 && m_bank2_mask)
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{
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data = m_bank2[offset & m_bank2_mask];
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}
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else if (!csbank3 && m_bank3_mask)
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{
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data = m_bank3[offset & m_bank3_mask];
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}
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return data;
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}
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