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author | 2015-11-08 12:56:12 +0100 | |
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committer | 2015-11-08 12:56:12 +0100 | |
commit | 7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch) | |
tree | f310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/devices/machine/mos8726.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/devices/machine/mos8726.cpp')
-rw-r--r-- | src/devices/machine/mos8726.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/devices/machine/mos8726.cpp b/src/devices/machine/mos8726.cpp new file mode 100644 index 00000000000..eca6ada5187 --- /dev/null +++ b/src/devices/machine/mos8726.cpp @@ -0,0 +1,125 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + MOS 8726R1 DMA Controller emulation + +**********************************************************************/ + +/* + + TODO: + + - all + +*/ + +#include "mos8726.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + + + +//************************************************************************** +// DEVICE TYPE DEFINITIONS +//************************************************************************** + +const device_type MOS8726 = &device_creator<mos8726_device>; + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// mos8726_device - constructor +//------------------------------------------------- + +mos8726_device::mos8726_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, MOS8726, "MOS8726", tag, owner, clock, "mos8726", __FILE__), + device_execute_interface(mconfig, *this), + m_icount(0), + m_bs(1) +{ } + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void mos8726_device::device_start() +{ + // set our instruction counter + m_icountptr = &m_icount; + + // save state + save_item(NAME(m_bs)); +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void mos8726_device::device_reset() +{ +} + + +//------------------------------------------------- +// execute_run - +//------------------------------------------------- + +void mos8726_device::execute_run() +{ + do + { + m_icount--; + } while (m_icount > 0); +} + + +//------------------------------------------------- +// read - +//------------------------------------------------- + +READ8_MEMBER( mos8726_device::read ) +{ + UINT8 data = 0; + + return data; +} + + +//------------------------------------------------- +// write - +//------------------------------------------------- + +WRITE8_MEMBER( mos8726_device::write ) +{ +} + + +//------------------------------------------------- +// bs_w - bank select write +//------------------------------------------------- + +WRITE_LINE_MEMBER( mos8726_device::bs_w ) +{ + m_bs = state; +} + + +//------------------------------------------------- +// romsel_r - ROM select read +//------------------------------------------------- + +int mos8726_device::romsel_r(int roml, int romh) +{ + return roml && romh; +} |