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Diffstat (limited to 'src/devices/bus/vidbrain/info_manager.cpp')
-rw-r--r--src/devices/bus/vidbrain/info_manager.cpp77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/devices/bus/vidbrain/info_manager.cpp b/src/devices/bus/vidbrain/info_manager.cpp
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+++ b/src/devices/bus/vidbrain/info_manager.cpp
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+// license:BSD-3-Clause
+// copyright-holders:hap
+/**********************************************************************
+
+ VideoBrain Info Manager cartridge emulation
+ 6KB EPROM (3*B2716), 1KB RAM (2*2114)
+
+ It has the same PCB layout as comp_language, with wire mods to put
+ the ROM/RAM at fixed addresses. There's a big orange label saying
+ "TEST UNIT NO. 14", and a handwritten one with "INFO. MGR SPECIAL".
+
+**********************************************************************/
+
+#include "emu.h"
+#include "info_manager.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(VB_INFO_MANAGER, videobrain_info_manager_cartridge_device, "vb_info_manager", "VideoBrain Info Manager cartridge")
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// videobrain_info_manager_cartridge_device - constructor
+//-------------------------------------------------
+
+videobrain_info_manager_cartridge_device::videobrain_info_manager_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, VB_INFO_MANAGER, tag, owner, clock),
+ device_videobrain_expansion_card_interface(mconfig, *this)
+{
+}
+
+
+//-------------------------------------------------
+// videobrain_bo_r - cartridge data read
+//-------------------------------------------------
+
+uint8_t videobrain_info_manager_cartridge_device::videobrain_bo_r(offs_t offset, int cs1, int cs2)
+{
+ uint8_t data = 0;
+
+ if (!cs1)
+ {
+ data = m_rom[offset & 0x7ff & m_rom_mask];
+ }
+ else if (!cs2)
+ {
+ data = m_ram[offset & m_ram_mask];
+ }
+ else if (offset >= 0x3000)
+ {
+ data = m_rom[offset & m_rom_mask];
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// videobrain_bo_w - cartridge data write
+//-------------------------------------------------
+
+void videobrain_info_manager_cartridge_device::videobrain_bo_w(offs_t offset, uint8_t data, int cs1, int cs2)
+{
+ if (!cs2)
+ {
+ m_ram[offset & m_ram_mask] = data;
+ }
+}