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tms32026: Fix status register and banking [O. Galibert]

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This commit is contained in:
Olivier Galibert 2017-04-12 14:12:18 +02:00
parent 7f9b1a42e5
commit ddd1a72e45
2 changed files with 21 additions and 17 deletions
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36
src/devices/cpu/tms32025/tms32025.cpp
View File

@ -228,6 +228,7 @@ tms32025_device::tms32025_device(const machine_config &mconfig, const char *tag,
, m_dr_in(*this)
, m_dx_out(*this)
{
m_fixed_STR1 = 0x0180;
}
@ -247,12 +248,14 @@ tms32025_device::tms32025_device(const machine_config &mconfig, device_type type
, m_dr_in(*this)
, m_dx_out(*this)
{
m_fixed_STR1 = 0x0180;
}
tms32026_device::tms32026_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: tms32025_device(mconfig, TMS32026, "TMS32026", tag, owner, clock, "tms32026", __FILE__, ADDRESS_MAP_NAME(tms32026_data))
{
m_fixed_STR1 = 0x0100;
}
@ -332,8 +335,8 @@ WRITE16_MEMBER(tms32025_device::greg_w)
void tms32025_device::CLR0(uint16_t flag) { m_STR0 &= ~flag; m_STR0 |= 0x0400; }
void tms32025_device::SET0(uint16_t flag) { m_STR0 |= flag; m_STR0 |= 0x0400; }
void tms32025_device::CLR1(uint16_t flag) { m_STR1 &= ~flag; m_STR1 |= 0x0180; }
void tms32025_device::SET1(uint16_t flag) { m_STR1 |= flag; m_STR1 |= 0x0180; }
void tms32025_device::CLR1(uint16_t flag) { m_STR1 &= ~flag; m_STR1 |= m_fixed_STR1; }
void tms32025_device::SET1(uint16_t flag) { m_STR1 |= flag; m_STR1 |= m_fixed_STR1; }
void tms32025_device::MODIFY_DP(int data)
{
@ -345,13 +348,13 @@ void tms32025_device::MODIFY_PM(int data)
{
m_STR1 &= ~PM_REG;
m_STR1 |= (data & PM_REG);
m_STR1 |= 0x0180;
m_STR1 |= m_fixed_STR1;
}
void tms32025_device::MODIFY_ARP(int data)
{
m_STR1 &= ~ARB_REG;
m_STR1 |= (m_STR0 & ARP_REG);
m_STR1 |= 0x0180;
m_STR1 |= m_fixed_STR1;
m_STR0 &= ~ARP_REG;
m_STR0 |= ((data << 13) & ARP_REG);
m_STR0 |= 0x0400;
@ -890,7 +893,7 @@ void tms32026_device::conf() /** Need to reconfigure the memory blocks */
if(next < 1 && prev >= 1) {
m_program->unmap_readwrite(0xfa00, 0xfbff);
m_data->install_ram(0x0200, 0x03ff, m_b0);
} else if(next < 1 && prev >= 1) {
} else if(next >= 1 && prev < 1) {
m_program->install_ram(0xfa00, 0xfbff, m_b0);
m_data->unmap_readwrite(0x0200, 0x03ff);
}
@ -898,7 +901,7 @@ void tms32026_device::conf() /** Need to reconfigure the memory blocks */
if(next < 2 && prev >= 2) {
m_program->unmap_readwrite(0xfc00, 0xfdff);
m_data->install_ram(0x0400, 0x05ff, m_b1);
} else if(next < 2 && prev >= 2) {
} else if(next >= 2 && prev < 2) {
m_program->install_ram(0xfc00, 0xfdff, m_b1);
m_data->unmap_readwrite(0x0400, 0x05ff);
}
@ -906,7 +909,7 @@ void tms32026_device::conf() /** Need to reconfigure the memory blocks */
if(next < 3 && prev >= 3) {
m_program->unmap_readwrite(0xfe00, 0xffff);
m_data->install_ram(0x0600, 0x07ff, m_b3);
} else if(next < 3 && prev >= 3) {
} else if(next >= 3 && prev < 3) {
m_program->install_ram(0xfe00, 0xffff, m_b3);
m_data->unmap_readwrite(0x0600, 0x07ff);
}
@ -1014,8 +1017,7 @@ void tms32025_device::lst1()
GETDATA(0, 0);
m_mHackIgnoreARP = 0;
m_STR1 = m_ALU.w.l;
m_STR1 |= 0x0180;
m_STR1 = m_ALU.w.l | m_fixed_STR1;
m_STR0 &= (~ARP_REG); /* ARB also gets copied to ARP */
m_STR0 |= (m_STR1 & ARB_REG);
}
@ -1637,7 +1639,7 @@ void tms32025_device::device_start()
m_PREVPC = 0;
m_PFC = 0;
m_STR0 = 0;
m_STR1 = 0;
m_STR1 = m_fixed_STR1;
m_ACC.d = 0;
m_Preg.d = 0;
m_Treg = 0;
@ -1770,13 +1772,13 @@ void tms32025_device::state_string_export(const device_state_entry &entry, std::
****************************************************************************/
void tms32025_device::common_reset()
{
m_PC = 0; /* Starting address on a reset */
m_STR0 |= 0x0600; /* INTM and unused bit set to 1 */
m_STR0 &= 0xefff; /* OV cleared to 0. Remaining bits undefined */
m_STR1 |= 0x07f0; /* SXM, C, HM, FSM, XF and unused bits set to 1 */
m_STR1 &= 0xeff0; /* CNF, FO, TXM, PM bits cleared to 0. Remaining bits undefined */
m_RPTC = 0; /* Reset repeat counter to 0 */
m_IFR = 0; /* IRQ pending flags */
m_PC = 0; /* Starting address on a reset */
m_STR0 |= 0x0600; /* INTM and unused bit set to 1 */
m_STR0 &= 0xefff; /* OV cleared to 0. Remaining bits undefined */
m_STR1 |= 0x0670 | m_fixed_STR1; /* SXM, C, HM, FSM, XF and unused bits set to 1 */
m_STR1 &= 0xeff0; /* CNF, FO, TXM, PM bits cleared to 0. Remaining bits undefined */
m_RPTC = 0; /* Reset repeat counter to 0 */
m_IFR = 0; /* IRQ pending flags */
m_xf_out(ASSERT_LINE); /* XF flag is high. Must set the pin */

2
src/devices/cpu/tms32025/tms32025.h
View File

@ -177,6 +177,8 @@ protected:
PAIR m_ALU;
uint16_t m_drr, m_dxr, m_tim, m_prd, m_imr, m_greg;
uint16_t m_fixed_STR1;
uint8_t m_timerover;
/********************** Status data ****************************/