Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 01:11:11 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

codata: Add uPD7201 + Am9513 and hook up their interrupts (nw)

Browse Source 
am9513: A few more notes (nw)
This commit is contained in:
AJR 2017-09-23 01:00:47 -04:00
parent ce5f0e885a
commit d99cfb1ebf
2 changed files with 38 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/devices/machine/am9513.cpp
View File

@ -6,8 +6,12 @@
The Am9513 is a five-channel counter/timer circuit introduced by
AMD around 1980. (It was also sold as the AmZ8073, apparently due
to a licensing deal with Zilog.) Clock source, edge selection,
gating and retriggering are programmable for each channel.
to a licensing deal with Zilog to develop Z8000 peripherals. No
company is known to have second-sourced the device, however.)
Clock source, edge selection, gating and retriggering are
programmable for each channel. There is also a frequency divider
which can take any of the 15 normal counter inputs and divide it
by any number between 1 and 16.
All internal counters are 16 bits wide (except the internal 4-bit
counter for the FOUT divider, which is not externally accessible).

68
src/mame/drivers/codata.cpp
View File

@ -13,9 +13,9 @@
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/terminal.h"
#define TERMINAL_TAG "terminal"
#include "bus/rs232/rs232.h"
#include "machine/am9513.h"
#include "machine/z80sio.h"
class codata_state : public driver_device
{
@ -23,32 +23,24 @@ public:
codata_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_p_base(*this, "rambase"),
m_terminal(*this, TERMINAL_TAG),
m_maincpu(*this, "maincpu")
{
}
DECLARE_READ16_MEMBER(keyin_r);
DECLARE_READ16_MEMBER(status_r);
void kbd_put(u8 data);
private:
uint8_t m_term_data;
virtual void machine_reset() override;
required_shared_ptr<uint16_t> m_p_base;
required_device<generic_terminal_device> m_terminal;
required_device<cpu_device> m_maincpu;
};
static ADDRESS_MAP_START(codata_mem, AS_PROGRAM, 16, codata_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000000, 0x0fffff) AM_RAM AM_SHARE("rambase")
AM_RANGE(0x000000, 0x1fffff) AM_RAM AM_SHARE("rambase")
AM_RANGE(0x200000, 0x203fff) AM_ROM AM_REGION("user1", 0);
AM_RANGE(0x400000, 0x403fff) AM_ROM AM_REGION("user1", 0x4000);
AM_RANGE(0x600000, 0x600001) AM_READ(keyin_r) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0xff00)
AM_RANGE(0x600002, 0x600003) AM_READ(status_r)
//AM_RANGE(0x600000, 0x600003) uPD7201 SIO
//AM_RANGE(0x800000, 0x800003) AM9513 5 channel timer
AM_RANGE(0x600000, 0x600007) AM_MIRROR(0x1ffff8) AM_DEVREADWRITE8("uart", upd7201_new_device, ba_cd_r, ba_cd_w, 0xff00)
AM_RANGE(0x800000, 0x800003) AM_MIRROR(0x1ffffc) AM_DEVREADWRITE("timer", am9513_device, read16, write16)
AM_RANGE(0xe00000, 0xe00001) AM_MIRROR(0x1ffffe) AM_READ_PORT("INPUT")
//AM_RANGE(0xa00000, 0xbfffff) page map (rw)
//AM_RANGE(0xc00000, 0xdfffff) segment map (rw), context register (r)
//AM_RANGE(0xe00000, 0xffffff) context register (w), 16-bit parallel input port (r)
@ -56,31 +48,15 @@ ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( codata )
PORT_START("INPUT")
PORT_BIT( 0xffff, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END
READ16_MEMBER( codata_state::keyin_r )
{
uint16_t ret = m_term_data;
m_term_data = 0;
return ret << 8;
}
READ16_MEMBER( codata_state::status_r )
{
return (m_term_data) ? 0x500 : 0x400;
}
void codata_state::kbd_put(u8 data)
{
m_term_data = data;
}
void codata_state::machine_reset()
{
uint8_t* RAM = memregion("user1")->base();
memcpy(m_p_base, RAM, 16);
m_term_data = 0;
m_maincpu->reset();
}
@ -89,9 +65,29 @@ static MACHINE_CONFIG_START( codata )
MCFG_CPU_ADD("maincpu",M68000, XTAL_16MHz / 2)
MCFG_CPU_PROGRAM_MAP(codata_mem)
/* video hardware */
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(PUT(codata_state, kbd_put))
MCFG_DEVICE_ADD("uart", UPD7201_NEW, XTAL_16MHz / 4)
MCFG_Z80SIO_OUT_TXDA_CB(DEVWRITELINE("rs423a", rs232_port_device, write_txd))
MCFG_Z80SIO_OUT_DTRA_CB(DEVWRITELINE("rs423a", rs232_port_device, write_dtr))
MCFG_Z80SIO_OUT_RTSA_CB(DEVWRITELINE("rs423a", rs232_port_device, write_rts))
MCFG_Z80SIO_OUT_TXDB_CB(DEVWRITELINE("rs423b", rs232_port_device, write_txd))
MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", M68K_IRQ_5))
MCFG_DEVICE_ADD("timer", AM9513A, 3993600) // actually XTAL_16MHz / 4, which produces 9615 baud when divided
MCFG_AM9513_OUT1_CALLBACK(NOOP) // Timer 1 = "Abort/Reset" (watchdog)
MCFG_AM9513_OUT2_CALLBACK(INPUTLINE("maincpu", M68K_IRQ_6)) // Timer 2
MCFG_AM9513_OUT3_CALLBACK(INPUTLINE("maincpu", M68K_IRQ_7)) // Refresh
MCFG_AM9513_OUT4_CALLBACK(DEVWRITELINE("uart", upd7201_new_device, rxca_w))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", upd7201_new_device, txca_w))
MCFG_AM9513_OUT5_CALLBACK(DEVWRITELINE("uart", upd7201_new_device, rxcb_w))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", upd7201_new_device, txcb_w))
MCFG_RS232_PORT_ADD("rs423a", default_rs232_devices, "terminal")
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart", upd7201_new_device, rxa_w))
MCFG_RS232_DSR_HANDLER(DEVWRITELINE("uart", upd7201_new_device, dcda_w))
MCFG_RS232_CTS_HANDLER(DEVWRITELINE("uart", upd7201_new_device, ctsa_w))
MCFG_RS232_PORT_ADD("rs423b", default_rs232_devices, nullptr)
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart", upd7201_new_device, rxb_w))
MACHINE_CONFIG_END
/* ROM definition */