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vt5x_cpu: Change register name (nw)

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This commit is contained in:
AJR 2019-12-19 11:29:18 -05:00
parent 34e524f232
commit 4a89d58a16
2 changed files with 9 additions and 9 deletions
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14
src/devices/cpu/vt50/vt50.cpp
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@ -30,7 +30,7 @@ vt5x_cpu_device::vt5x_cpu_device(const machine_config &mconfig, device_type type
, m_bbits(bbits) , m_bbits(bbits)
, m_ybits(ybits) , m_ybits(ybits)
, m_pc(0) , m_pc(0)
, m_rom_bank(0) , m_rom_page(0)
, m_mode_ff(false) , m_mode_ff(false)
, m_done_ff(false) , m_done_ff(false)
, m_ac(0) , m_ac(0)
@ -108,7 +108,7 @@ void vt5x_cpu_device::device_start()
state_add<u8>(STATE_GENFLAGS, "CURFLAGS", [this]() { state_add<u8>(STATE_GENFLAGS, "CURFLAGS", [this]() {
return (m_mode_ff ? 1 : 0) | (m_done_ff ? 2 : 0); return (m_mode_ff ? 1 : 0) | (m_done_ff ? 2 : 0);
}).formatstr("%7s").noshow(); }).formatstr("%7s").noshow();
state_add(VT5X_BANK, "BANK", m_rom_bank).mask(3); state_add(VT5X_PAGE, "PAGE", m_rom_page).mask(3);
state_add(VT5X_MODE, "MODE", m_mode_ff).noshow(); state_add(VT5X_MODE, "MODE", m_mode_ff).noshow();
state_add(VT5X_DONE, "DONE", m_done_ff).noshow(); state_add(VT5X_DONE, "DONE", m_done_ff).noshow();
state_add(VT5X_AC, "AC", m_ac).formatstr("%03O").mask(0177); state_add(VT5X_AC, "AC", m_ac).formatstr("%03O").mask(0177);
@ -121,7 +121,7 @@ void vt5x_cpu_device::device_start()
// save state // save state
save_item(NAME(m_pc)); save_item(NAME(m_pc));
save_item(NAME(m_rom_bank)); save_item(NAME(m_rom_page));
save_item(NAME(m_mode_ff)); save_item(NAME(m_mode_ff));
save_item(NAME(m_done_ff)); save_item(NAME(m_done_ff));
save_item(NAME(m_ac)); save_item(NAME(m_ac));
@ -144,7 +144,7 @@ void vt5x_cpu_device::device_start()
void vt5x_cpu_device::device_reset() void vt5x_cpu_device::device_reset()
{ {
m_pc = 0; m_pc = 0;
m_rom_bank = 0; m_rom_page = 0;
m_video_process = false; m_video_process = false;
// CPU is initialized in weird state that does not allow first instruction to fully execute // CPU is initialized in weird state that does not allow first instruction to fully execute
@ -261,7 +261,7 @@ void vt5x_cpu_device::execute_tf(u8 inst)
case 0120: case 0120:
// IROM // IROM
m_rom_bank = (m_rom_bank + 1) & 3; m_rom_page = (m_rom_page + 1) & 3;
break; break;
case 0140: case 0140:
@ -486,14 +486,14 @@ void vt5x_cpu_device::execute_th(u8 inst)
} }
if ((m_pc & 0377) == 0377) if ((m_pc & 0377) == 0377)
m_rom_bank = (m_rom_bank + 1) & 3; m_rom_page = (m_rom_page + 1) & 3;
m_pc = (m_pc + 1) & 03777; m_pc = (m_pc + 1) & 03777;
} }
void vt5x_cpu_device::execute_tj(u8 dest) void vt5x_cpu_device::execute_tj(u8 dest)
{ {
if (m_load_pc) if (m_load_pc)
m_pc = u16(m_rom_bank) << 8 | dest; m_pc = u16(m_rom_page) << 8 | dest;
else else
m_pc = (m_pc + 1) & 03777; m_pc = (m_pc + 1) & 03777;
} }

4
src/devices/cpu/vt50/vt50.h
View File

@ -10,7 +10,7 @@ class vt5x_cpu_device : public cpu_device
{ {
public: public:
enum { enum {
VT5X_PC, VT5X_BANK, VT5X_PC, VT5X_PAGE,
VT5X_MODE, VT5X_DONE, VT5X_MODE, VT5X_DONE,
VT5X_AC, VT5X_B, VT5X_X, VT5X_Y, VT5X_X8, VT5X_AC, VT5X_B, VT5X_X, VT5X_Y, VT5X_X8,
VT5X_CFF, VT5X_VID VT5X_CFF, VT5X_VID
@ -75,7 +75,7 @@ protected:
// internal state // internal state
u16 m_pc; u16 m_pc;
u8 m_rom_bank; u8 m_rom_page;
bool m_mode_ff; bool m_mode_ff;
bool m_done_ff; bool m_done_ff;
u8 m_ac; u8 m_ac;