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(nw) pimps : hooked up the uarts

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Robbbert 2017-09-15 03:43:35 +10:00
parent 03e6776950
commit e52cfffebd
1 changed files with 118 additions and 54 deletions
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168
src/mame/drivers/pimps.cpp
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@ -6,74 +6,106 @@
06/12/2009 Skeleton driver. 06/12/2009 Skeleton driver.
No schematics or hardware info available.
http://www.classiccmp.org/dunfield/pimps/index.htm
Commands: Commands:
A Assemble Code A xxxx xxxx - Assemble (from editor file): origin destination
D Dump Memory D xxxx,xxxx - Dump memory to host port
E Enter the Text Editor E - Enter editor
F Full Duplex Host Operation A - Append at end of file
G Go To C - Clear memory file (reqires ESCAPE to confirm)
H Half Duplex Host Operation D xx - Delete line number xx
M Memory I xx - Insert at line xx
P Port L xx xx - List range of lines
S Substitute Q - Query: Display highest used address
T Transparent Mode X - eXit editor (requires ESCAPE to confirm)
U Usart Parameters for Host $ xxxx xxxx - exit directly to assembler
V Virtual Memory F - set for Full-duplex host operation
G xxxx - Go (execute) at address
H - set for Half-duplex host operation
M xxxx,xxxx - Display a range of memory (hex dump)
P xx xx-[xx.] - display/Edit I/O Port
S xxxx - Substitute data into memory
T - Transparent link to host (Ctrl-A exits)
U - set host Uart parameters (8251 control registers)
V - Virtual memory (Not used on PIMPS board)
Notes:
The 'D'ump command outputs memory to the host in some form of Intel
HEX records, and waits for line-feed from the host before proceeding.
The 'V'irtual memory function was to control an EPROM emulator which
was part of the original design (see Chucks notes below) and was not
used on the PIMPS board.
Editor:
Operates in HEXIDECIMAL line numbers. Only supports up to 256 lines
(01-00). You must enter full two-digit number when prompted.
You MUST 'C'lear the memory file before you begin, otherwise you will
be editing random memory content.
Assembler:
Comment is an INSTRUCTION! - this means that you need to put at least
one space before and after ';' when entering a line comment.
Does not understand DECIMAL numbers. It understands character constants
('c' and 'cc') and hex numbers ($xx or $xxxx).
8-bit values MUST contain two hex digits or one quoted character. 16-bit
constants MUST contain four hex digits or two quoted characters.
Use 'S' instead if 'SP', eg: LXI S,$1000
Only EQU, DB, DW and END directives are supported. An END statement is
REQUIRED (otherwise you get the message '?tab-ful' as it fills the symbol
table with garbage occuring in memory after the end of the file).
RST instructions are implemented as 8 separate 'RST0'-'RST8' memonics.
****************************************************************************/ ****************************************************************************/
#include "emu.h" #include "emu.h"
#include "cpu/i8085/i8085.h" #include "cpu/i8085/i8085.h"
#include "machine/terminal.h" #include "machine/clock.h"
#include "machine/i8251.h"
#include "bus/rs232/rs232.h"
#define TERMINAL_TAG "terminal"
class pimps_state : public driver_device class pimps_state : public driver_device
{ {
public: public:
pimps_state(const machine_config &mconfig, device_type type, const char *tag) pimps_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag), : driver_device(mconfig, type, tag)
m_terminal(*this, TERMINAL_TAG), , m_maincpu(*this, "maincpu")
m_maincpu(*this, "maincpu") , m_uart1(*this, "uart1")
{ , m_uart2(*this, "uart2")
} { }
DECLARE_READ8_MEMBER(term_status_r); DECLARE_WRITE_LINE_MEMBER( clock_tick );
DECLARE_READ8_MEMBER(term_r);
void kbd_put(u8 data); private:
uint8_t m_term_data;
virtual void machine_reset() override; virtual void machine_reset() override;
required_device<generic_terminal_device> m_terminal;
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
required_device<i8251_device> m_uart1;
required_device<i8251_device> m_uart2;
}; };
// should be 8251 UART
READ8_MEMBER( pimps_state::term_status_r )
{
return (m_term_data) ? 3 : 1;
}
READ8_MEMBER( pimps_state::term_r )
{
uint8_t ret = m_term_data;
m_term_data = 0;
return ret;
}
static ADDRESS_MAP_START(pimps_mem, AS_PROGRAM, 8, pimps_state) static ADDRESS_MAP_START(pimps_mem, AS_PROGRAM, 8, pimps_state)
ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0xefff) AM_RAM AM_RANGE(0x0000, 0xefff) AM_RAM
AM_RANGE(0xf000, 0xffff) AM_ROM AM_RANGE(0xf000, 0xffff) AM_ROM AM_REGION("roms", 0)
ADDRESS_MAP_END ADDRESS_MAP_END
static ADDRESS_MAP_START(pimps_io, AS_IO, 8, pimps_state) static ADDRESS_MAP_START(pimps_io, AS_IO, 8, pimps_state)
ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0xf0, 0xf0) AM_READ(term_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write) AM_RANGE(0xf0, 0xf0) AM_DEVREADWRITE("uart1", i8251_device, data_r, data_w)
AM_RANGE(0xf1, 0xf1) AM_READ(term_status_r) AM_RANGE(0xf1, 0xf1) AM_DEVREADWRITE("uart1", i8251_device, status_r, control_w)
AM_RANGE(0xf2, 0xf2) AM_DEVREADWRITE("uart2", i8251_device, data_r, data_w)
AM_RANGE(0xf3, 0xf3) AM_DEVREADWRITE("uart2", i8251_device, status_r, control_w)
ADDRESS_MAP_END ADDRESS_MAP_END
/* Input ports */ /* Input ports */
@ -83,32 +115,64 @@ INPUT_PORTS_END
void pimps_state::machine_reset() void pimps_state::machine_reset()
{ {
m_term_data = 0; m_maincpu->set_pc(0xf000);
} }
void pimps_state::kbd_put(u8 data) // source of baud frequency is not documented, so we invent a clock
WRITE_LINE_MEMBER( pimps_state::clock_tick )
{ {
m_term_data = data; m_uart1->write_txc(state);
m_uart1->write_rxc(state);
} }
// baud is not documented, we will use 9600
static DEVICE_INPUT_DEFAULTS_START( terminal ) // set up terminal to default to 9600, 7 bits, even parity
DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_EVEN )
DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 )
DEVICE_INPUT_DEFAULTS_END
static MACHINE_CONFIG_START( pimps ) static MACHINE_CONFIG_START( pimps )
/* basic machine hardware */ /* basic machine hardware */
MCFG_CPU_ADD("maincpu",I8085A, XTAL_2MHz) MCFG_CPU_ADD("maincpu",I8085A, XTAL_2MHz)
MCFG_CPU_PROGRAM_MAP(pimps_mem) MCFG_CPU_PROGRAM_MAP(pimps_mem)
MCFG_CPU_IO_MAP(pimps_io) MCFG_CPU_IO_MAP(pimps_io)
/* video hardware */ MCFG_DEVICE_ADD("uart_clock", CLOCK, 153600)
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0) MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(pimps_state, clock_tick))
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(PUT(pimps_state, kbd_put))
MCFG_DEVICE_ADD("uart1", I8251, 0)
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232a", rs232_port_device, write_txd))
MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232a", rs232_port_device, write_dtr))
MCFG_I8251_RTS_HANDLER(DEVWRITELINE("rs232a", rs232_port_device, write_rts))
MCFG_RS232_PORT_ADD("rs232a", default_rs232_devices, "terminal")
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart1", i8251_device, write_rxd))
MCFG_RS232_DSR_HANDLER(DEVWRITELINE("uart1", i8251_device, write_dsr))
MCFG_RS232_CTS_HANDLER(DEVWRITELINE("uart1", i8251_device, write_cts))
MCFG_DEVICE_CARD_DEVICE_INPUT_DEFAULTS("terminal", terminal) // must be exactly here
MCFG_DEVICE_ADD("uart2", I8251, 0)
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232b", rs232_port_device, write_txd))
MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232b", rs232_port_device, write_dtr))
MCFG_I8251_RTS_HANDLER(DEVWRITELINE("rs232b", rs232_port_device, write_rts))
MCFG_RS232_PORT_ADD("rs232b", default_rs232_devices, nullptr)
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart2", i8251_device, write_rxd))
MCFG_RS232_DSR_HANDLER(DEVWRITELINE("uart2", i8251_device, write_dsr))
MCFG_RS232_CTS_HANDLER(DEVWRITELINE("uart2", i8251_device, write_cts))
MACHINE_CONFIG_END MACHINE_CONFIG_END
/* ROM definition */ /* ROM definition */
ROM_START( pimps ) ROM_START( pimps )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_REGION( 0x1000, "roms", ROMREGION_ERASEFF )
ROM_LOAD( "pimps.bin", 0xf000, 0x1000, CRC(5da1898f) SHA1(d20e31d0981a1f54c83186dbdfcf4280e49970d0)) ROM_LOAD( "pimps.bin", 0x0000, 0x1000, CRC(5da1898f) SHA1(d20e31d0981a1f54c83186dbdfcf4280e49970d0))
ROM_END ROM_END
/* Driver */ /* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */ /* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */
COMP( 197?, pimps, 0, 0, pimps, pimps, pimps_state, 0, "Henry Colford", "P.I.M.P.S.", MACHINE_NO_SOUND_HW) COMP( 197?, pimps, 0, 0, pimps, pimps, pimps_state, 0, "Henry Colford", "P.I.M.P.S.", MACHINE_NO_SOUND_HW) // terminal beeps