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prophet600: further hookups (nw)

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This commit is contained in:
arbee 2016-01-10 19:57:38 -05:00
parent 2454363f4e
commit 74059cc625
1 changed files with 87 additions and 20 deletions
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107
src/mame/drivers/prophet600.cpp
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@ -20,12 +20,29 @@
0xe000-0xe001: 6850 reads
I/O map:
00-03: 8253 PIT
00-07: 8253 PIT
08: set row to scan for keyboard/panel input and LED / lamp output
09: read: analog comparitor, some value vs. the DAC. write: output for LEDs/lamps
comparitor bits:
bit 1: FFFStatus
bit 2: output of 8253 channel 2
bit 3: ADCCompare: returns sign of if current value is > or < the DAC value
0a: read: keyboard/panel input scan bits, write: select a pot on the panel for the comparitor
0b: write: update all gate signals
0c: ???
0d: write: select which CV signal will be updated with the current DAC value
0e: write: mask, masks
bit 0: FFFP -FF P
bit 1: mask gate from 8253
bit 3: FFFD FF D
bit 4: FFFCL -FF CL
Info:
- Prophet 600 Technical Manual
- https://github.com/gligli/p600fw - GPLv3 licensed complete replacement firmware
- https://github.com/gligli/p600fw - GPLv3 licensed complete replacement firmware
for the Prophet 600, but written in C and runs on an AVR that replaces the original
Z80.
@ -44,6 +61,17 @@
#define PIT_TAG "pit"
#define UART_TAG "uart"
enum
{
CV_CV_Osc1A = 0, CV_Osc2A, CV_Osc3A, CV_Osc4A, CV_Osc5A, CV_Osc6A,
CV_Osc1B, CV_Osc2B, CV_Osc3B, CV_Osc4B, CV_Osc5B, CV_Osc6B,
CV_Flt1, CV_Flt2, CV_Flt3, CV_Flt4, CV_Flt5, CV_Flt6,
CV_Amp1, CV_Amp2, CV_Amp3, CV_Amp4, CV_Amp5, CV_Amp6,
CV_PModOscB, CV_VolA, CV_VolB, CV_MasterVol, CV_APW, CV_ExtFilter, CV_Resonance, CV_BPW,
CV_MAX
};
class prophet600_state : public driver_device
{
public:
@ -53,7 +81,8 @@ public:
m_acia(*this, UART_TAG),
m_dac(0),
m_scanrow(0),
m_comparitor(0)
m_comparitor(0),
m_nmi_gate(false)
{ }
required_device<cpu_device> m_maincpu;
@ -61,7 +90,8 @@ public:
DECLARE_DRIVER_INIT(prophet600);
DECLARE_WRITE_LINE_MEMBER( pit_tick_w );
DECLARE_WRITE_LINE_MEMBER( pit_ch0_tick_w );
DECLARE_WRITE_LINE_MEMBER( pit_ch2_tick_w );
DECLARE_WRITE_LINE_MEMBER( acia_irq_w );
DECLARE_WRITE_LINE_MEMBER( acia_clock_w );
@ -79,15 +109,33 @@ private:
UINT16 m_dac;
UINT8 m_scanrow;
UINT8 m_comparitor;
bool m_nmi_gate;
// gates
bool m_ASaw, m_ATri, m_Sync, m_BSaw, m_BTri, m_PModFA, m_PModFil;
// control voltages
UINT16 m_CVs[CV_MAX];
};
WRITE_LINE_MEMBER( prophet600_state::pit_tick_w )
WRITE_LINE_MEMBER( prophet600_state::pit_ch0_tick_w )
{
m_maincpu->set_input_line(INPUT_LINE_IRQ0, state);
}
WRITE_LINE_MEMBER( prophet600_state::pit_ch2_tick_w )
{
m_comparitor &= ~0x04;
m_comparitor |= (state == ASSERT_LINE) ? 0x04 : 0x00;
}
WRITE_LINE_MEMBER( prophet600_state::acia_irq_w )
{
if (!m_nmi_gate)
{
m_maincpu->set_input_line(INPUT_LINE_NMI, state);
}
}
WRITE_LINE_MEMBER( prophet600_state::acia_clock_w )
@ -116,17 +164,17 @@ WRITE8_MEMBER(prophet600_state::scanrow_w)
}
// scanrow 0x10 = LEDs, 0x20 = 7-segment #1, 0x40 = 7-segment #2
// LEDs in row 0x10 are Seq1=0, Seq2=1, ArpUD=2, ArpAssign=3, Preset=4, Record=5, ToTape=6, FromTape=7
WRITE8_MEMBER(prophet600_state::led_w)
{
if (m_scanrow == 0x10)
if (m_scanrow & 0x10)
{
// LEDs in row 0x10 are Seq1=0, Seq2=1, ArpUD=2, ArpAssign=3, Preset=4, Record=5, ToTape=6, FromTape=7
}
else if (m_scanrow == 0x20)
else if (m_scanrow & 0x20)
{
output().set_digit_value(0, data);
}
else if (m_scanrow == 0x40)
else if (m_scanrow & 0x40)
{
output().set_digit_value(1, data);
}
@ -139,22 +187,38 @@ READ8_MEMBER(prophet600_state::scan_r)
WRITE8_MEMBER(prophet600_state::mask_w)
{
m_nmi_gate = (data & 0x02) ? true : false;
if (m_nmi_gate) // gate is set, comparitor line is pulled up to Vcc
{
m_comparitor |= 0x04;
}
else
{
m_comparitor &= ~0x04;
}
// printf("8253 gate = %x\n", data & 0x02);
}
/*
CV destinations:
Osc1A=0, Osc2A, Osc3A, Osc4A, Osc5A, Osc6A,
Osc1B, Osc2B, Osc3B, Osc4B, Osc5B, Osc6B,
Fil1, Fil2, Fil3, Fil4, Fil5, Fil6,
Amp1, Amp2, Amp3, Amp4, Amp5, Amp6,
PModOscB=24, VolA, VolB, MVol, APW, ExtFil, Resonance, BPW
*/
WRITE8_MEMBER(prophet600_state::cv_w)
{
int cvnum = data & 7;
if (!(cvnum & 0x08)) m_CVs[cvnum] = m_dac;
if (!(cvnum & 0x10)) m_CVs[cvnum+8] = m_dac;
if (!(cvnum & 0x20)) m_CVs[cvnum+16] = m_dac;
if (!(cvnum & 0x40)) m_CVs[cvnum+24] = m_dac;
}
WRITE8_MEMBER(prophet600_state::gate_w)
{
m_ASaw = (data & 0x01);
m_ATri = (data & 0x02);
m_Sync = (data & 0x04);
m_BSaw = (data & 0x08);
m_BTri = (data & 0x10);
m_PModFA = (data & 0x20);
m_PModFil = (data & 0x40);
}
/* Pots: Mixer=0,Cutoff=1,Resonance=2,FilEnvAmt=3,FilRel=4,FilSus=5,
@ -168,7 +232,7 @@ WRITE8_MEMBER(prophet600_state::potmux_w)
READ8_MEMBER(prophet600_state::comparitor_r)
{
m_comparitor ^= 0x04;
// m_comparitor ^= 0x04;
return m_comparitor;
}
@ -184,7 +248,7 @@ static ADDRESS_MAP_START( cpu_map, AS_PROGRAM, 8, prophet600_state )
ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_IO, 8, prophet600_state )
AM_RANGE(0x00, 0x03) AM_MIRROR(0xff00) AM_DEVREADWRITE(PIT_TAG, pit8253_device, read, write)
AM_RANGE(0x00, 0x07) AM_MIRROR(0xff00) AM_DEVREADWRITE(PIT_TAG, pit8253_device, read, write)
AM_RANGE(0x08, 0x08) AM_MIRROR(0xff00) AM_WRITE(scanrow_w)
AM_RANGE(0x09, 0x09) AM_MIRROR(0xff00) AM_READWRITE(comparitor_r, led_w)
AM_RANGE(0x0a, 0x0a) AM_MIRROR(0xff00) AM_READWRITE(scan_r, potmux_w)
@ -207,7 +271,10 @@ static MACHINE_CONFIG_START( prophet600, prophet600_state )
MCFG_DEVICE_ADD(PIT_TAG, PIT8253, XTAL_8MHz/4)
MCFG_PIT8253_CLK0(XTAL_8MHz/4)
MCFG_PIT8253_OUT0_HANDLER(WRITELINE(prophet600_state, pit_tick_w))
MCFG_PIT8253_CLK1(XTAL_8MHz/4)
MCFG_PIT8253_CLK2(XTAL_8MHz/4)
MCFG_PIT8253_OUT0_HANDLER(WRITELINE(prophet600_state, pit_ch0_tick_w))
MCFG_PIT8253_OUT2_HANDLER(WRITELINE(prophet600_state, pit_ch2_tick_w))
MCFG_DEVICE_ADD(UART_TAG, ACIA6850, 0)
MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE("mdout", midi_port_device, write_txd))