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itt1700: Remove wishful thinking (nw)

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This commit is contained in:
AJR 2019-06-14 10:42:07 -04:00
parent 0ea26b370b
commit 56756e7a75
1 changed files with 1 additions and 9 deletions
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10
src/mame/drivers/itt1700.cpp
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@ -19,8 +19,6 @@ This device may be related to the Intel 8251, but it is definitely not a SCN2651
#include "cpu/z80/z80.h"
#include "cpu/mcs48/mcs48.h"
#include "machine/itt1700_kbd.h"
#include "sound/dac.h"
#include "sound/volt_reg.h"
#include "video/mc6845.h"
#include "screen.h"
#include "speaker.h"
@ -97,7 +95,7 @@ void itt1700_state::itt1700(machine_config &config)
upi.p1_out_cb().set("keyboard", FUNC(itt1700_keyboard_device::clock_w)).bit(0);
upi.p1_out_cb().append("keyboard", FUNC(itt1700_keyboard_device::line1_w)).bit(1);
upi.p1_out_cb().append("keyboard", FUNC(itt1700_keyboard_device::line2_w)).bit(2);
upi.p2_out_cb().set("dac", FUNC(dac_byte_interface::write)).mask(0x07);
// P20-P22 = PWM LEDs? (too high-frequency to be speaker output)
upi.t0_in_cb().set("keyboard", FUNC(itt1700_keyboard_device::sense_r));
ITT1700_KEYBOARD(config, "keyboard");
@ -111,12 +109,6 @@ void itt1700_state::itt1700(machine_config &config)
crtc.set_screen("screen");
crtc.set_show_border_area(false);
crtc.set_update_row_callback(FUNC(itt1700_state::update_row), this);
SPEAKER(config, "speaker").front_center();
DAC_3BIT_BINARY_WEIGHTED(config, "dac", 0).add_route(ALL_OUTPUTS, "speaker", 0.5);
voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref"));
vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT); vref.add_route(0, "dac", -1.0, DAC_VREF_NEG_INPUT);
}
ROM_START(itt1700)