From 56756e7a75b6e2a2bb77fc798ae4f6b21b1a2d2c Mon Sep 17 00:00:00 2001 From: AJR Date: Fri, 14 Jun 2019 10:42:07 -0400 Subject: itt1700: Remove wishful thinking (nw) --- src/mame/drivers/itt1700.cpp | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/src/mame/drivers/itt1700.cpp b/src/mame/drivers/itt1700.cpp index 13e83c14c6c..377f2d1e15b 100644 --- a/src/mame/drivers/itt1700.cpp +++ b/src/mame/drivers/itt1700.cpp @@ -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) -- cgit v1.2.3