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https://github.com/holub/mame
synced 2025-04-20 15:32:45 +03:00
(MESS) spc1000 : added commented-out code for floppy-disk (thx to Anna Wu for finding it)
This commit is contained in:
Robbbert
parent
0833a1a306
commit
7bdc9ee91c
@ -1,3 +1,5 @@
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// license:MAME
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// copyright-holders:Miodrag Milanovic, Robbbert
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/***************************************************************************
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Samsung SPC-1000 driver by Miodrag Milanovic
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@ -11,6 +13,17 @@ ToDo:
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- Find out if any of the unconnected parts of 6000,4000,4001 are used
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NOTE: 2014-09-13: added code from someone's modified MESS driver for floppy
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disk. Since it is not to our coding standards, it is
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commented out with #if 0/#endif and 3 slashes (///).
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It is planned to be converted when time permits. The
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author is unknown.
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Hardware details of the fdc: Intelligent device, Z80 CPU,
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XTAL_8MHz, PPI 8255, FDC uPD765C, 2 RAM chips, 28 other
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small ics. And of course, no schematic.
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****************************************************************************/
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@ -44,6 +57,8 @@ public:
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DECLARE_READ8_MEMBER(porta_r);
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DECLARE_READ8_MEMBER(mc6847_videoram_r);
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DECLARE_WRITE8_MEMBER(cass_w);
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///DECLARE_WRITE8_MEMBER(spc1000_sd725_w);
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///DECLARE_READ8_MEMBER(spc1000_sd725_r);
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MC6847_GET_CHARROM_MEMBER(get_char_rom)
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{
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@ -56,6 +71,8 @@ private:
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UINT8 m_GMODE;
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UINT16 m_page;
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virtual void machine_reset();
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///FloppyDisk fdd;
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///void initDisk(void);
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required_device<mc6847_base_device> m_vdg;
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required_device<cpu_device> m_maincpu;
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required_device<ram_device> m_ram;
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@ -140,6 +157,7 @@ static ADDRESS_MAP_START( spc1000_io , AS_IO, 8, spc1000_state )
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AM_RANGE(0x8008, 0x8008) AM_READ_PORT("LINE8")
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AM_RANGE(0x8009, 0x8009) AM_READ_PORT("LINE9")
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AM_RANGE(0xA000, 0xA000) AM_READWRITE(spc1000_iplk_r, spc1000_iplk_w)
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///AM_RANGE(0xC000, 0xC002) AM_READWRITE(spc1000_sd725_r, spc1000_sd725_w)
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ADDRESS_MAP_END
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/* Input ports */
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@ -226,7 +244,7 @@ static INPUT_PORTS_START( spc1000 )
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PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_CHAR(0x09)
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PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
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PORT_START("LINE9")
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PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
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PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) /// PORT_NAME("IPL") PORT_CODE(KEYCODE_F6)
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PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5)
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PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
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PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0')
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@ -236,6 +254,283 @@ static INPUT_PORTS_START( spc1000 )
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PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
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INPUT_PORTS_END
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#if 0
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typedef union PC
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{
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struct {
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unsigned char rDAV : 1;
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unsigned char rRFD : 1;
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unsigned char rDAC : 1;
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unsigned char rNON : 1;
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unsigned char wDAV : 1;
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unsigned char wRFD : 1;
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unsigned char wDAC : 1;
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unsigned char wATN : 1;
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} bits;
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unsigned char b;
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} pc_t;
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typedef char byte;
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typedef struct
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{
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byte rdVal;
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byte wrVal;
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byte rSize;
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UINT16 seq;
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byte isCmd;
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byte cmd;
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UINT8 sdata[6];
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pc_t PC;
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char diskfile[1024];
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char diskfile2[1024];
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UINT8 diskdata[80*16*256]; // 80 tracks 16 sectors 256 byte
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UINT8 diskdata2[80*16*256];
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byte modified;
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byte modified2;
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byte write;
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byte write2;
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byte *buffer;
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byte idx;
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int datasize;
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int dataidx;
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} FloppyDisk;
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void spc1000_state::initDisk(void)
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{
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FILE *f;
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strcpy(fdd.diskfile, "system.dsk");
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strcpy(fdd.diskfile2, "disk.dsk");
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printf("ddd\n");
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if (strlen(fdd.diskfile) > 4)
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{
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f = fopen(fdd.diskfile, "rb");
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if (f > 0) {
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fread(fdd.diskdata, 1, sizeof(fdd.diskdata), f);
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fclose(f);
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}
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}
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if (strlen(fdd.diskfile2) > 4)
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{
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f = fopen(fdd.diskfile2, "rb");
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if (f > 0) {
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fread(fdd.diskdata2, 1, sizeof(fdd.diskdata2), f);
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printf("disk.dsk\n");
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fclose(f);
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}
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}
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}
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WRITE8_MEMBER(spc1000_state::spc1000_sd725_w)
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{
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//printf("write 0x%04x=%d\n", (0xc000+offset), data);
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if (offset == 0) {
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fdd.wrVal = data;
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} else if (offset == 2) {
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if (data != 0)
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{
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fdd.PC.b = (data & 0xf0) | (fdd.PC.b & 0xf);
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}
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else
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{
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fdd.PC.b = fdd.PC.b & 0xf;
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}
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if (data & 0x10) // DAV=1
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{
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//printf("FDD Data Valid (c000 bit4 on)\n");
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if (fdd.isCmd == 1) // command
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{
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fdd.isCmd = 0;
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printf("FDD Command(Data) = 0h%02x\n", fdd.wrVal);
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fdd.cmd = fdd.wrVal;
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switch (fdd.wrVal)
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{
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case 0x00: // FDD Initialization
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printf("*FDD Initialization\n");
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break;
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case 0x01: // FDD Write
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printf("*FDD Write\n");
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fdd.rSize = 4;
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fdd.seq = 0;
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break;
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case 0x02: // FDD Read
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printf("*FDD Read\n");
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// fdd.PC.bits.rRFD = 1;
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fdd.rSize = 4;
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fdd.seq = 0;
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break;
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case 0x03: // FDD Send Data
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//printf("*FDD Send Data\n");
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if (fdd.seq == 4)
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{
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printf("seq=%d,(%d,%d,%d,%d)\n", fdd.seq, fdd.sdata[0], fdd.sdata[1], fdd.sdata[2], fdd.sdata[3]);
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fdd.buffer = (byte*)(fdd.sdata[1] != 0 ? fdd.diskdata2 : fdd.diskdata);
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fdd.buffer += (fdd.sdata[2] * 16 + fdd.sdata[3]-1) * 256;
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fdd.datasize = fdd.sdata[0] * 256;
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fdd.dataidx = 0;
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}
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fdd.rdVal = 0;
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break;
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case 0x04: // FDD Copy
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printf("*FDD Copy\n");
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fdd.rSize = 7;
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fdd.seq = 0;
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break;
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case 0x05: // FDD Format
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printf("*FDD Format\n");
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break;
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case 0x06: // FDD Send Status
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printf("*FDD Send Status\n");
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#define DATA_OK 0x40
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fdd.rdVal = 0x80 & DATA_OK;
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break;
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case 0x07: // FDD Send Drive State
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printf("*FDD Send Drive State\n");
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#define DRIVE0 0x10
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fdd.rdVal = 0x0f | DRIVE0;
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break;
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case 0x08: // FDD RAM Test
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printf("*FDD RAM Test\n");
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fdd.rSize = 4;
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fdd.seq = 0;
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break;
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case 0x09: // FDD Transmit 2
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printf("*FDD Transmit 2\n");
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fdd.rSize = 4;
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fdd.seq = 0;
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break;
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case 0x0A: // FDD Action
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printf("*FDD No Action\n");
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break;
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case 0x0B: // FDD Transmit 1
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printf("*FDD Transmit 1\n");
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fdd.rSize = 4;
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fdd.seq = 0;
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break;
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case 0x0C: // FDD Receive
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printf("*FDD Receive\n");
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fdd.rSize = 4;
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fdd.seq = 0;
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break;
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case 0x0D: // FDD Go
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printf("*FDD Go\n");
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fdd.rSize = 2;
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fdd.seq = 0;
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break;
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case 0x0E: // FDD Load
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printf("*FDD Load\n");
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fdd.rSize = 6;
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fdd.seq = 0;
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break;
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case 0x0F: // FDD Save
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printf("FDD Save\n");
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fdd.rSize = 6;
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fdd.seq = 0;
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break;
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case 0x10: // FDD Load and Go
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printf("*FDD Load and Go\n");
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break;
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}
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}
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else
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{
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if (fdd.rSize-- > 0)
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{
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fdd.sdata[fdd.seq++] = (char) fdd.wrVal;
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printf("seq=%d, data = 0x%02x\n", fdd.seq-1, fdd.sdata[fdd.seq-1]);
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// printf("cmd=%d\n", fdd.cmd);
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if (fdd.rSize == 0)
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{
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printf("Fdd Command(%d) Fired\n", fdd.cmd);
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if (fdd.cmd == 0x0e)
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{
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int offset = (int)((int)fdd.sdata[2] * 16 + (int)fdd.sdata[3]-1) * 256;
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int size = fdd.sdata[0] * 256;
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printf("load(%d,%d,%d,%d),offset=%d, size=%d\n", fdd.sdata[0], fdd.sdata[1], fdd.sdata[2], fdd.sdata[3], offset, size);
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fdd.buffer = (byte*)(fdd.sdata[1] != 0 ? fdd.diskdata2 : fdd.diskdata);
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//fdd.buffer += offset;
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fdd.datasize = size;
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unsigned short addr = ((unsigned short)fdd.sdata[4]) * 0x100 + (unsigned short)fdd.sdata[5];
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printf("target addr=%04x, %02x, %02x, size=%d\n", addr, fdd.sdata[4], fdd.sdata[5], fdd.datasize);
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UINT8 *mem = m_ram->pointer();
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memcpy(&mem[addr], &fdd.buffer[offset], fdd.datasize);
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}
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else if (fdd.cmd == 0x0f)
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{
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int offset = (int)((int)fdd.sdata[2] * 16 + (int)fdd.sdata[3]-1) * 256;
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int size = fdd.sdata[0] * 256;
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printf("save(%d,%d,%d,%d),offset=%d, size=%d\n", fdd.sdata[0], fdd.sdata[1], fdd.sdata[2], fdd.sdata[3], offset, size);
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fdd.buffer = (byte*)(fdd.sdata[1] != 0 ? fdd.diskdata2 : fdd.diskdata);
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fdd.buffer += offset;
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fdd.datasize = size;
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unsigned short addr = ((unsigned short)fdd.sdata[4]) * 0x100 + (unsigned short)fdd.sdata[5];
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printf("target addr=%04x, %02x, %02x, size=%d\n", addr, fdd.sdata[4], fdd.sdata[5], fdd.datasize);
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UINT8 *mem = m_ram->pointer();
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memcpy(fdd.buffer, &mem[addr], fdd.datasize);
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}
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}
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}
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}
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fdd.PC.bits.rDAC = 1;
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}
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else if (fdd.PC.bits.rDAC == 1) // DAV=0
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{
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//printf("FDD Ouput Data Cleared (c000 bit4 off)\n");
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fdd.wrVal = 0;
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// printf("FDD_Read = 0h%02x (cleared)\n", fdd.wrVal);
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fdd.PC.bits.rDAC = 0;
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}
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if (data & 0x20) // RFD=1
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{
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// printf("FDD Ready for Data Read (c000 bit5 on)\n");
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fdd.PC.bits.rDAV = 1;
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}
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else if (fdd.PC.bits.rDAV == 1) // RFD=0
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{
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//fdd.rdVal = 0;
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//printf("FDD Input Data = 0h%02x\n", fdd.rdVal);
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fdd.PC.bits.rDAV = 0;
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}
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if (data & 0x40) // DAC=1
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{
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// printf("FDD Data accepted (c000 bit6 on)\n");
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}
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if (data & 0x80) // ATN=1
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{
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// printf("FDD Attention (c000 bit7 on)\n");
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//printf("Command = 0x%02x\n", fdd.rdVal);
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//printf("FDD Ready for Data\n", fdd.rdVal);
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fdd.PC.bits.rRFD = 1;
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fdd.isCmd = 1;
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}
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}
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return;
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}
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READ8_MEMBER(spc1000_state::spc1000_sd725_r)
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{
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//printf("read %04x\n", (0xc000+offset));
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if (offset == 1)
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{
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if (fdd.cmd == 3)
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{
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fdd.rdVal = *(fdd.buffer + fdd.dataidx++);
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}
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//printf("FDD_Data > 0h%02x\n", spcsys.fdd.rdVal);
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return fdd.rdVal;
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}
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else if (offset == 2)
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{
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//printf("FDD_PC > 0h%02x\n", spcsys.fdd.PC.b);
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return fdd.PC.b;
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}
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return 0;
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}
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#endif
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void spc1000_state::machine_reset()
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{
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@ -253,6 +548,7 @@ void spc1000_state::machine_reset()
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membank("bank2")->set_base(ram);
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membank("bank3")->set_base(mem);
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membank("bank4")->set_base(ram + 0x8000);
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///initDisk();
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m_IPLK = 1;
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}
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@ -331,6 +627,15 @@ ROM_START( spc1000 )
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ROM_LOAD( "spcall.rom", 0x0000, 0x8000, CRC(19638fc9) SHA1(489f1baa7aebf3c8c660325fb1fd790d84203284))
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ROM_END
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#if 0
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ROM_START( spc1000 )
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ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
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ROM_LOAD( "spcall.rom", 0x0000, 0x8000, CRC(2FBB6ECA) SHA1(cc9a076b0f00d54b2aec31f1f558b10f43ef61c8))
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/// more roms to come...
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ROM_END
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#endif
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/* Driver */
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/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
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