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r40544 Saturday 29th August, 2015 at 21:13:21 UTC by Sergey Svishchev
68230: handle Port C Data Direction Register (register 4)

[src/emu/machine]	68230pit.c
[src/mess/drivers]	tispeak.c

trunk/src/emu/machine/68230pit.c

r249055	r249056
131	131	m_pbddr = data;
132	132	break;
133	133
	134	case PIT_68230_PCDDR:
	135	m_pcddr = data;
	136	break;
	137
134	138	case PIT_68230_PACR:
135	139	m_pacr = data;
136	140	// callbacks
r249055	r249056
205	209	data = m_pbddr;
206	210	break;
207	211
	212	case PIT_68230_PCDDR:
	213	data = m_pcddr;
	214	break;
	215
208	216	case PIT_68230_PACR:
209	217	data = m_pacr;
210	218	break;

trunk/src/mess/drivers/tispeak.c

r249055	r249056
487	487
488	488	void tispeak_state::prepare_display()
489	489	{
490		UINT16 gridmask = (m_display_decay[15][16] != 0) ? 0xffff : 0x8000;
491		display_matrix_seg(16+1, 16, m_plate | 0x10000, m_grid & gridmask, 0x3fff);
	490	display_matrix_seg(16, 16, m_plate, (m_r & 0x8000) ? m_grid : 0, 0x3fff);
492	491	}
493	492
494	493	WRITE16_MEMBER(tispeak_state::snspell_write_r)
r249055	r249056
501	500	// R15: filament on
502	501	// other bits: MCU internal use
503	502	m_r = m_inp_mux = data;
504		m_grid = data & 0x81ff;
	503	m_grid = data & 0x1ff;
505	504	prepare_display();
506	505	}
507	506
r249055	r249056
548	547	{
549	548	// same as default, except R13 is used for an extra digit
550	549	m_r = m_inp_mux = data;
551		m_grid = data & 0xa1ff;
	550	m_grid = data & 0x21ff;
552	551	prepare_display();
553	552	}
554	553

https://github.com/mamedev/mame/commit/6e35ccc0e883feaa51d302eb0cbe785ce9dbf611

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