From 8ed26d0e1beb56a6cd325bb8d22aeb4e0588f794 Mon Sep 17 00:00:00 2001 From: Dirk Best Date: Fri, 23 Apr 2021 16:34:08 +0200 Subject: [PATCH] basf7100: Preliminary RS232 hookup --- src/mame/drivers/basf7100.cpp | 61 +++++++++++++++++++++++++++-------- 1 file changed, 48 insertions(+), 13 deletions(-) diff --git a/src/mame/drivers/basf7100.cpp b/src/mame/drivers/basf7100.cpp index a8227be2abc..21b929a0409 100644 --- a/src/mame/drivers/basf7100.cpp +++ b/src/mame/drivers/basf7100.cpp @@ -40,8 +40,8 @@ TODO: - Dump real character ROM - Improve video emulation - - Find documentation for switches - - Hook up serial ports + - Find documentation for switches S2, S3, S4 (might app. specific) + - Serial interrupts, flags, control Notes: - Runs the BOS operating system, possibly also CP/M? @@ -51,10 +51,12 @@ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/com8116.h" +#include "machine/i8251.h" #include "machine/i8255.h" #include "machine/pic8259.h" #include "machine/wd_fdc.h" #include "bus/centronics/ctronics.h" +#include "bus/rs232/rs232.h" #include "imagedev/floppy.h" #include "machine/basf7100_kbd.h" #include "emupal.h" @@ -77,6 +79,7 @@ public: m_fdccpu(*this, "fdccpu"), m_pic(*this, "pic"), m_ppi(*this, "ppi%u", 0U), + m_usart(*this, "usart%u", 0U), m_centronics(*this, "centronics"), m_fdc(*this, "fdc"), m_floppy(*this, "fdc:%u", 0), @@ -105,6 +108,7 @@ private: required_device m_fdccpu; required_device m_pic; required_device_array m_ppi; + required_device_array m_usart; required_device m_centronics; required_device m_fdc; required_device_array m_floppy; @@ -184,10 +188,10 @@ void basf7100_state::io_map(address_map &map) map(0x04, 0x07).rw(m_ppi[1], FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x08, 0x09).mirror(0x02).rw(m_pic, FUNC(pic8259_device::read), FUNC(pic8259_device::write)); map(0x0c, 0x0f).rw(m_ppi[2], FUNC(i8255_device::read), FUNC(i8255_device::write)); -// map(0x10, 0x11) 8251 (primary) - map(0x12, 0x12).w("com8116_0", FUNC(com8116_device::stt_str_w)); // or str_stt_w -// map(0x14, 0x15) 8251 (secondary) - map(0x16, 0x16).w("com8116_1", FUNC(com8116_device::stt_str_w)); // or str_stt_w + map(0x10, 0x11).rw(m_usart[0], FUNC(i8251_device::read), FUNC(i8251_device::write)); + map(0x12, 0x12).w("brg0", FUNC(com8116_device::stt_str_w)); // or str_stt_w + map(0x14, 0x15).rw(m_usart[1], FUNC(i8251_device::read), FUNC(i8251_device::write)); + map(0x16, 0x16).w("brg1", FUNC(com8116_device::stt_str_w)); // or str_stt_w // map(0x17, 0x17) rs232 flags/control map(0x18, 0x18).lr8(NAME([this] () -> uint8_t { return m_int_flags; })); map(0x1c, 0x1c).portr("S1"); @@ -225,7 +229,7 @@ void basf7100_state::fdc_io_map(address_map &map) static INPUT_PORTS_START( basf7100 ) PORT_START("S1") - PORT_DIPNAME(0x0f, 0x0e, "Baud Rate") PORT_DIPLOCATION("S1:1,2,3,4") + PORT_DIPNAME(0x0f, 0x0e, "Baud Rate") PORT_DIPLOCATION("S1:1,2,3,4") PORT_DIPSETTING( 0x00, "50") PORT_DIPSETTING( 0x01, "75") PORT_DIPSETTING( 0x02, "110") @@ -242,10 +246,17 @@ static INPUT_PORTS_START( basf7100 ) PORT_DIPSETTING( 0x0d, "7200") PORT_DIPSETTING( 0x0e, "9600") PORT_DIPSETTING( 0x0f, "19800") - PORT_DIPUNKNOWN_DIPLOC(0x10, 0x10, "S1:5") - PORT_DIPUNKNOWN_DIPLOC(0x20, 0x20, "S1:6") - PORT_DIPUNKNOWN_DIPLOC(0x40, 0x40, "S1:7") - PORT_DIPUNKNOWN_DIPLOC(0x80, 0x80, "S1:8") + PORT_DIPNAME(0x30, 0x30, "Data Bits") PORT_DIPLOCATION("S1:5,6") + PORT_DIPSETTING( 0x00, "5") + PORT_DIPSETTING( 0x10, "6") + PORT_DIPSETTING( 0x20, "7") + PORT_DIPSETTING( 0x30, "8") + PORT_DIPNAME(0x40, 0x00, "Parity Enabled") PORT_DIPLOCATION("S1:7") + PORT_DIPSETTING( 0x00, DEF_STR(No)) + PORT_DIPSETTING( 0x40, DEF_STR(Yes)) + PORT_DIPNAME(0x80, 0x80, "Parity") PORT_DIPLOCATION("S1:8") + PORT_DIPSETTING( 0x00, "Odd") + PORT_DIPSETTING( 0x80, "Even") PORT_START("S2") PORT_DIPUNKNOWN_DIPLOC(0x01, 0x01, "S2:1") @@ -599,9 +610,33 @@ void basf7100_state::basf7100(machine_config &config) PIC8259(config, m_pic, 0); m_pic->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); - COM8116(config, "com8116_0", 5.0688_MHz_XTAL); + I8251(config, m_usart[0], 0); // unknown clock + m_usart[0]->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd)); + m_usart[0]->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts)); + m_usart[0]->dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr)); - COM8116(config, "com8116_1", 5.0688_MHz_XTAL); + com8116_device &brg0(COM8116(config, "brg0", 5.0688_MHz_XTAL)); + brg0.fr_handler().set(m_usart[0], FUNC(i8251_device::write_rxc)); + brg0.ft_handler().set(m_usart[0], FUNC(i8251_device::write_txc)); + + rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr)); + rs232.rxd_handler().set(m_usart[0], FUNC(i8251_device::write_rxd)); + rs232.cts_handler().set(m_usart[0], FUNC(i8251_device::write_cts)); + rs232.dsr_handler().set(m_usart[0], FUNC(i8251_device::write_dsr)); + + I8251(config, m_usart[1], 0); // unknown clock + m_usart[1]->txd_handler().set("auxrs232", FUNC(rs232_port_device::write_txd)); + m_usart[1]->rts_handler().set("auxrs232", FUNC(rs232_port_device::write_rts)); + m_usart[1]->dtr_handler().set("auxrs232", FUNC(rs232_port_device::write_dtr)); + + com8116_device &brg1(COM8116(config, "brg1", 5.0688_MHz_XTAL)); + brg1.fr_handler().set(m_usart[1], FUNC(i8251_device::write_rxc)); + brg1.ft_handler().set(m_usart[1], FUNC(i8251_device::write_txc)); + + rs232_port_device &auxrs232(RS232_PORT(config, "auxrs232", default_rs232_devices, nullptr)); + auxrs232.rxd_handler().set(m_usart[1], FUNC(i8251_device::write_rxd)); + auxrs232.cts_handler().set(m_usart[1], FUNC(i8251_device::write_cts)); + auxrs232.dsr_handler().set(m_usart[1], FUNC(i8251_device::write_dsr)); I8255(config, m_ppi[0]); // port a: input (switches?)