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(MESS) New WORKING system. BINBUG. [Robbbert]
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Robbbert
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@ -5841,6 +5841,7 @@ src/mess/drivers/bebox.c svneol=native#text/plain
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src/mess/drivers/beehive.c svneol=native#text/plain
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src/mess/drivers/beta.c svneol=native#text/plain
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src/mess/drivers/bigbord2.c svneol=native#text/plain
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src/mess/drivers/binbug.c svneol=native#text/plain
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src/mess/drivers/bk.c svneol=native#text/plain
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src/mess/drivers/bmjr.c svneol=native#text/plain
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src/mess/drivers/bml3.c svneol=native#text/plain
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257
src/mess/drivers/binbug.c
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257
src/mess/drivers/binbug.c
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@ -0,0 +1,257 @@
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/***************************************************************************
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BINBUG
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2013-01-14 Driver created
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All input must be in uppercase.
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Commands:
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A - See and alter memory
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B - Set breakpoint (2 permitted)
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C - Clear breakpoint
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D - Dump memory to paper tape
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G - Go to address, run
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L - Load memory from paper tape
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S - See and alter registers
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BINBUG is an alternate bios to PIPBUG, however it uses its own
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video output. Method of output is through a DG640 board (sold by
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Applied Technology) which one can suppose a character generator
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rom would be used; therefore undumped.
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Keyboard input, like PIPBUG, is via a serial device.
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The baud rate is 300, 8N1.
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The terminal output (via D command) seems to contain binary
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data, so it is disabled for now. It is most likely the tape
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output mentioned below.
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There are 3 versions of BINBUG:
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- 3.6 300 baud tape routines, 300 baud keyboard, memory-mapped VDU
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- 4.4 300 baud keyboard, ACOS tape system, advanced video routines
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- 5.2 ACOS tape system, 1200 baud terminal
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ToDo:
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- Need dumps of 4.4 and 5.2, also the DG640 CGEN.
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- Add cassette
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****************************************************************************/
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#include "emu.h"
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#include "cpu/s2650/s2650.h"
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#include "machine/terminal.h"
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#include "machine/keyboard.h"
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#include "imagedev/snapquik.h"
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class binbug_state : public driver_device
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{
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public:
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binbug_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_keyboard(*this, KEYBOARD_TAG),
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// m_terminal(*this, TERMINAL_TAG),
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m_p_videoram(*this, "videoram") { }
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DECLARE_WRITE8_MEMBER(binbug_ctrl_w);
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DECLARE_READ8_MEMBER(binbug_serial_r);
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DECLARE_WRITE8_MEMBER(binbug_serial_w);
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const UINT8 *m_p_chargen;
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virtual void video_start();
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UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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required_device<serial_keyboard_device> m_keyboard;
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// required_device<serial_terminal_device> m_terminal;
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required_shared_ptr<const UINT8> m_p_videoram;
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};
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WRITE8_MEMBER( binbug_state::binbug_ctrl_w )
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{
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}
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READ8_MEMBER( binbug_state::binbug_serial_r )
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{
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return m_keyboard->tx_r();
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}
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WRITE8_MEMBER( binbug_state::binbug_serial_w )
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{
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// m_terminal->rx_w(data);
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}
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static ADDRESS_MAP_START(binbug_mem, AS_PROGRAM, 8, binbug_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE( 0x0000, 0x03ff) AM_ROM
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AM_RANGE( 0x0400, 0x77ff) AM_RAM
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AM_RANGE( 0x7800, 0x7fff) AM_RAM AM_SHARE("videoram")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START(binbug_io, AS_IO, 8, binbug_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(S2650_CTRL_PORT, S2650_CTRL_PORT) AM_WRITE(binbug_ctrl_w)
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AM_RANGE(S2650_SENSE_PORT, S2650_FO_PORT) AM_READWRITE(binbug_serial_r,binbug_serial_w)
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ADDRESS_MAP_END
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/* Input ports */
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static INPUT_PORTS_START( binbug )
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INPUT_PORTS_END
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static const serial_terminal_interface terminal_intf =
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{
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DEVCB_NULL
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};
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void binbug_state::video_start()
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{
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m_p_chargen = memregion("chargen")->base();
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}
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UINT32 binbug_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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UINT8 y,ra,chr,gfx;
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UINT16 sy=0,ma=0,x;
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for (y = 0; y < 16; y++)
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{
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for (ra = 0; ra < 10; ra++)
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{
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UINT16 *p = &bitmap.pix16(sy++);
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for (x = ma; x < ma + 64; x++)
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{
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gfx = 0;
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if (ra < 9)
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{
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chr = m_p_videoram[x];
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gfx = m_p_chargen[(chr<<4) | ra ] ^ (BIT(chr, 7) ? 0xff : 0);
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}
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/* Display a scanline of a character */
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*p++ = BIT(gfx, 7);
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*p++ = BIT(gfx, 6);
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*p++ = BIT(gfx, 5);
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*p++ = BIT(gfx, 4);
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*p++ = BIT(gfx, 3);
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*p++ = BIT(gfx, 2);
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*p++ = BIT(gfx, 1);
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*p++ = BIT(gfx, 0);
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}
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}
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ma+=64;
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}
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return 0;
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}
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QUICKLOAD_LOAD( binbug )
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{
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address_space &space = image.device().machine().device("maincpu")->memory().space(AS_PROGRAM);
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int i;
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int quick_addr = 0x0440;
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int exec_addr;
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int quick_length;
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UINT8 *quick_data;
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int read_;
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quick_length = image.length();
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quick_data = (UINT8*)malloc(quick_length);
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if (!quick_data)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot open file");
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image.message(" Cannot open file");
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return IMAGE_INIT_FAIL;
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}
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read_ = image.fread( quick_data, quick_length);
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if (read_ != quick_length)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot read the file");
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image.message(" Cannot read the file");
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return IMAGE_INIT_FAIL;
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}
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if (quick_data[0] != 0xc4)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Invalid header");
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image.message(" Invalid header");
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return IMAGE_INIT_FAIL;
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}
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exec_addr = quick_data[1] * 256 + quick_data[2];
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if (exec_addr >= quick_length)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Exec address beyond end of file");
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image.message(" Exec address beyond end of file");
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return IMAGE_INIT_FAIL;
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}
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if (quick_length < 0x444)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too short");
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image.message(" File too short");
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return IMAGE_INIT_FAIL;
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}
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if (quick_length > 0x8000)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too long");
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image.message(" File too long");
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return IMAGE_INIT_FAIL;
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}
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for (i = quick_addr; i < quick_length; i++)
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{
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space.write_byte(i, quick_data[i]);
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}
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/* display a message about the loaded quickload */
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image.message(" Quickload: size=%04X : exec=%04X",quick_length,exec_addr);
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// Start the quickload
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image.device().machine().device("maincpu")->state().set_pc(exec_addr);
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return IMAGE_INIT_PASS;
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}
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static MACHINE_CONFIG_START( binbug, binbug_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu",S2650, XTAL_1MHz)
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MCFG_CPU_PROGRAM_MAP(binbug_mem)
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MCFG_CPU_IO_MAP(binbug_io)
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/* video hardware */
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MCFG_SCREEN_ADD("screen", RASTER)
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MCFG_SCREEN_REFRESH_RATE(50)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
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MCFG_SCREEN_UPDATE_DRIVER(binbug_state, screen_update)
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MCFG_SCREEN_SIZE(512, 160)
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MCFG_SCREEN_VISIBLE_AREA(0, 511, 0, 159)
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MCFG_PALETTE_LENGTH(2)
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MCFG_PALETTE_INIT(monochrome_amber)
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MCFG_SERIAL_KEYBOARD_ADD(KEYBOARD_TAG, terminal_intf, 300)
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// MCFG_SERIAL_TERMINAL_ADD(TERMINAL_TAG, terminal_intf, 300)
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/* quickload */
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MCFG_QUICKLOAD_ADD("quickload", binbug, "pgm", 1)
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MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( binbug )
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ROM_REGION( 0x8000, "maincpu", ROMREGION_ERASEFF )
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ROM_LOAD( "binbug.rom", 0x0000, 0x0400, CRC(2cb1ac6e) SHA1(a969883fc767484d6b0fa103cfa4b4129b90441b) )
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/* character generator not dumped, using the one from 'c10' for now */
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ROM_REGION( 0x2000, "chargen", 0 )
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ROM_LOAD( "c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf))
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ROM_FILL(0, 16, 0)
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ROM_END
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/* Driver */
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/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
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COMP( 1980, binbug, pipbug, 0, binbug, binbug, driver_device, 0, "MicroByte", "BINBUG 3.6", GAME_NO_SOUND_HW )
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@ -2195,3 +2195,4 @@ pencil2
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br8641
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nectk85
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nd80z
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binbug
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@ -2009,6 +2009,7 @@ $(MESSOBJ)/skeleton.a: \
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$(MESS_DRIVERS)/ax20.o \
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$(MESS_DRIVERS)/babbage.o \
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$(MESS_DRIVERS)/beehive.o \
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$(MESS_DRIVERS)/binbug.o \
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$(MESS_DRIVERS)/bob85.o \
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$(MESS_DRIVERS)/br8641.o \
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$(MESS_DRIVERS)/busicom.o \
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