diff options
author | 2013-10-20 17:49:46 +0000 | |
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committer | 2013-10-20 17:49:46 +0000 | |
commit | 1359d642c9656987b6d988e8aafb628841fcc97f (patch) | |
tree | 80aba2eeaa4d3b1687ad54d5e83d225e5b32ed7f /src/emu/bus/c64/easy_calc_result.c | |
parent | 9cd179295e4783237b05a0c1369b46254da7c04a (diff) |
(MESS) c64: Moved expansion and user ports under emu/bus. (nw)
Diffstat (limited to 'src/emu/bus/c64/easy_calc_result.c')
-rw-r--r-- | src/emu/bus/c64/easy_calc_result.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/emu/bus/c64/easy_calc_result.c b/src/emu/bus/c64/easy_calc_result.c new file mode 100644 index 00000000000..44722503067 --- /dev/null +++ b/src/emu/bus/c64/easy_calc_result.c @@ -0,0 +1,110 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Easy Calc Result cartridge emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +/* + + PCB Layout + ---------- + + |===========================| + |=| | + |=| ROM0 LS73 | + |=| | + |=| | + |=| | + |=| | + |=| ROM1 LS00 | + |=| | + |===========================| + + ROM0 - Hitachi HN61364P 8Kx8 EPROM "CR2001" + ROM1 - Hitachi HN613128P 16Kx8 EPROM "CR3001" + +*/ + +#include "easy_calc_result.h" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type C64_EASY_CALC_RESULT = &device_creator<c64_easy_calc_result_cartridge_device>; + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// c64_easy_calc_result_cartridge_device - constructor +//------------------------------------------------- + +c64_easy_calc_result_cartridge_device::c64_easy_calc_result_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, C64_EASY_CALC_RESULT, "C64 Easy Calc Result cartridge", tag, owner, clock, "c64_easy_calc_result", __FILE__), + device_c64_expansion_card_interface(mconfig, *this) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void c64_easy_calc_result_cartridge_device::device_start() +{ + // state saving + save_item(NAME(m_bank)); +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void c64_easy_calc_result_cartridge_device::device_reset() +{ + m_bank = 0; +} + + +//------------------------------------------------- +// c64_cd_r - cartridge data read +//------------------------------------------------- + +UINT8 c64_easy_calc_result_cartridge_device::c64_cd_r(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2) +{ + if (!roml) + { + data = m_roml[offset & 0x1fff]; + } + else if (!romh) + { + data = m_romh[(m_bank << 13) | (offset & 0x1fff)]; + } + + return data; +} + + +//------------------------------------------------- +// c64_cd_w - cartridge data write +//------------------------------------------------- + +void c64_easy_calc_result_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2) +{ + if (!io1) + { + m_bank = !BIT(offset, 0); + } +} |