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newbrain: WIP. (nw)

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This commit is contained in:
Curt Coder 2017-01-08 20:42:09 +02:00
parent a1863b300b
commit 63bb503904
2 changed files with 30 additions and 33 deletions
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52
src/mame/drivers/newbrain.cpp
View File

@ -35,7 +35,6 @@
- only key 7 is recognized
- escape key mapping
- VFD
- reset/powerup time constants
- bitmapped video
- accurate video timing
- cassette
@ -375,7 +374,7 @@ READ8_MEMBER( newbrain_state::cop_in_r )
uint8_t data = 0xe;
// keyboard
data |= BIT(m_keydata, 2);
data |= BIT(m_403_q, 2);
if (LOG_COP) logerror("%s %s IN %01x\n", machine().time().as_string(), machine().describe_context(), data);
@ -403,9 +402,9 @@ READ8_MEMBER( newbrain_state::cop_g_r )
uint8_t data = 0x1;
// keyboard
data |= BIT(m_keydata, 1) << 1;
data |= BIT(m_keydata, 0) << 2;
data |= BIT(m_keydata, 3) << 3;
data |= BIT(m_403_q, 1) << 1;
data |= BIT(m_403_q, 0) << 2;
data |= BIT(m_403_q, 3) << 3;
if (LOG_COP) logerror("%s %s G %01x\n", machine().time().as_string(), machine().describe_context(), data);
@ -476,32 +475,29 @@ WRITE8_MEMBER( newbrain_state::cop_d_w )
m_cassette2->output(m_cop_tdo ? -1.0 : +1.0);
if (k4) {
// CD4024 RST
m_keylatch = 0;
m_405_q = 0;
if (LOG_COP) logerror("%s %s keylatch reset\n", machine().time().as_string(), machine().describe_context());
} else if (m_cop_k6 && !k6) {
// CD4024 CLK
m_keylatch++;
m_keylatch &= 0x0f;
m_405_q++;
m_405_q &= 0x7f;
if (LOG_COP) logerror("%s %s keylatch %u\n", machine().time().as_string(), machine().describe_context(), m_keylatch);
if (LOG_COP) logerror("%s %s keylatch %u\n", machine().time().as_string(), machine().describe_context(), m_405_q);
}
if (!m_cop_k6 && k6) {
//CD4076 CLK
m_keydata = m_y[m_keylatch]->read();
m_403_d = m_y[m_405_q & 0x0f]->read() & 0x0f;
if (LOG_COP) logerror("%s %s keydata %01x\n", machine().time().as_string(), machine().describe_context(), m_403_d);
}
if (LOG_COP) logerror("%s %s keydata %01x\n", machine().time().as_string(), machine().describe_context(), m_keydata);
} else if (m_cop_k6 && k6) {
m_keydata = 0;
} else if (!k6) {
m_keydata = 0x0f;
if (LOG_COP) logerror("%s %s keydata disabled\n", machine().time().as_string(), machine().describe_context());
output().set_digit_value(m_keylatch, m_segment_data);
if (k6) {
m_403_q = m_403_d;
} else {
m_403_q = 0xf;
output().set_digit_value(m_405_q & 0x0f, m_402_q);
if (LOG_COP) logerror("%s %s keydata disabled\n", machine().time().as_string(), machine().describe_context());
}
m_cop_k6 = k6;
@ -531,10 +527,10 @@ WRITE_LINE_MEMBER( newbrain_state::k2_w )
if (state)
{
m_segment_data >>= 1;
m_segment_data = (m_cop_so << 15) | (m_segment_data & 0x7fff);
m_402_q >>= 1;
m_402_q = (m_cop_so << 15) | (m_402_q & 0x7fff);
if (LOG_VFD) logerror("%s %s SEGMENT %04x\n", machine().time().as_string(), machine().describe_context(), m_segment_data);
if (LOG_VFD) logerror("%s %s SEGMENT %04x\n", machine().time().as_string(), machine().describe_context(), m_402_q);
}
}
@ -732,9 +728,9 @@ void newbrain_state::machine_start()
save_item(NAME(m_cop_g1));
save_item(NAME(m_cop_g3));
save_item(NAME(m_cop_k6));
save_item(NAME(m_keylatch));
save_item(NAME(m_keydata));
save_item(NAME(m_segment_data));
save_item(NAME(m_405_q));
save_item(NAME(m_403_q));
save_item(NAME(m_402_q));
}

11
src/mame/includes/newbrain.h
View File

@ -45,8 +45,8 @@ public:
m_userint(1),
m_clkint(1),
m_copint(1),
m_keylatch(0),
m_keydata(0xf)
m_405_q(0),
m_403_q(0xf)
{
}
@ -122,9 +122,10 @@ protected:
int m_cop_g3;
int m_cop_k6;
int m_keylatch;
int m_keydata;
uint16_t m_segment_data;
int m_405_q;
uint8_t m_403_q;
uint8_t m_403_d;
uint16_t m_402_q;
int m_rv;
int m_fs;