MAME SVN History

199869 Revisions

r26176 Friday 15th November, 2013 at 17:33:36 UTC by Jürgen Buchmüller
Missed initialinzing the strobon timer. Fix RAM allocation. Fix inverted sector #

[/branches/alto2/src/emu/cpu/alto2]	a2disk.c a2mem.c alto2.h
[/branches/alto2/src/emu/machine]	diablo_hd.c

branches/alto2/src/emu/machine/diablo_hd.c
r26175	r26176
1154	1154	int bit = 0;
1155	1155
1156	1156	if (m_rdgate_0) {
1157		LOG_DRIVE((0,"[DHD] %s: unit #%d rdgate not asserted\n", __FUNCTION__, m_unit));
	1157	LOG_DRIVE((8,"[DHD] %s: unit #%d rdgate not asserted\n", __FUNCTION__, m_unit));
1158	1158	return 1; // read gate is not asserted (active 0)
1159	1159	}
1160	1160

branches/alto2/src/emu/cpu/alto2/a2mem.c
r26175	r26176
838	838	}
839	839
840	840	// allocate 128KB of main memory
841		m_mem.ram = global_alloc_array(UINT32, ALTO2_RAM_SIZE);
842		m_mem.hpb = global_alloc_array(UINT8, ALTO2_RAM_SIZE);
	841	m_mem.ram = global_alloc_array(UINT32, sizeof(UINT16)*ALTO2_RAM_SIZE);
	842	m_mem.hpb = global_alloc_array(UINT8, sizeof(UINT16)*ALTO2_RAM_SIZE);
843	843
844	844	/**
845	845	* <PRE>
r26175	r26176
892	892
893	893	#if ALTO2_HAMMING_CHECK
894	894	// Initialize the hamming codes and parity bit
895		for (UINT32 addr = 0; addr < ALTO2_IO_PAGE_BASE; addr++)
896		hamming_code(1, addr, m_mem.ram[addr]);
	895	for (UINT32 addr = 0; addr < ALTO2_IO_PAGE_BASE; addr++) {
	896	hamming_code(1, addr, 0);
	897	hamming_code(1, 0200000 + addr, 0);
	898	}
897	899	#endif
898	900	}

branches/alto2/src/emu/cpu/alto2/a2disk.c
r26175	r26176
2299	2299	#endif
2300	2300
2301	2301	/* KSTAT[0-3] update the current sector in the kstat field */
2302		PUT_KSTAT_SECTOR(m_dsk.kstat, dhd->get_sector());
	2302	PUT_KSTAT_SECTOR(m_dsk.kstat, dhd->get_sector() ^ 017);
2303	2303
2304	2304	/* clear input and output shift registers (?) */
2305	2305	m_dsk.shiftin = 0;
r26175	r26176
2369	2369	m_dsk.bitclk_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(alto2_cpu_device::disk_bitclk),this));
2370	2370	#endif
2371	2371
	2372	m_dsk.strobon_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(alto2_cpu_device::disk_strobon),this));
	2373	m_dsk.strobon_timer->adjust(attotime::from_nsec(TW_STROBON));
	2374
2372	2375	m_dsk.seclate_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(alto2_cpu_device::disk_seclate),this));
2373	2376	m_dsk.seclate_timer->adjust(attotime::from_nsec(TW_SECLATE), 1);
2374	2377

branches/alto2/src/emu/cpu/alto2/alto2.h
r26175	r26176
1404	1404	#else
1405	1405	int bitclk_time; //!< time in clocks per bit
1406	1406	#endif
1407		UINT8 sect4; //!< current sector_mark_0 (aka SECT[4]) from the drive
1408	1407	UINT8 datin; //!< current datin from the drive
1409	1408	UINT8 bitcount; //!< bit counter
1410	1409	UINT8 carry; //!< carry output of the bitcounter

199869 Revisions