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-rw-r--r--src/devices/sound/mos7360.cpp1206
1 files changed, 1206 insertions, 0 deletions
diff --git a/src/devices/sound/mos7360.cpp b/src/devices/sound/mos7360.cpp
new file mode 100644
index 00000000000..fe8631cfee2
--- /dev/null
+++ b/src/devices/sound/mos7360.cpp
@@ -0,0 +1,1206 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ MOS 7360/8360 Text Edit Device (TED) emulation
+
+**********************************************************************/
+
+#include "emu.h"
+#include "mos7360.h"
+
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+#define LOG 0
+
+
+#define VERBOSE_LEVEL 0
+#define DBG_LOG(N,M,A) \
+ do { \
+ if(VERBOSE_LEVEL >= N) \
+ { \
+ if( M ) \
+ logerror("%11.6f: %-24s", machine().time().as_double(), (char*) M ); \
+ logerror A; \
+ } \
+ } while(0)
+
+
+#define VREFRESHINLINES 28
+
+#define TIMER1HELPER (m_reg[0] | (m_reg[1] << 8))
+#define TIMER2HELPER (m_reg[2] | (m_reg[3] << 8))
+#define TIMER3HELPER (m_reg[4] | (m_reg[5] << 8))
+#define TIMER1 (TIMER1HELPER ? TIMER1HELPER : 0x10000)
+#define TIMER2 (TIMER2HELPER ? TIMER2HELPER : 0x10000)
+#define TIMER3 (TIMER3HELPER ? TIMER3HELPER : 0x10000)
+
+#define TED7360_YPOS 40
+#define RASTERLINE_2_C16(a) ((a + m_lines - TED7360_YPOS - 5) % m_lines)
+#define C16_2_RASTERLINE(a) ((a + TED7360_YPOS + 5) % m_lines)
+#define XPOS 8
+#define YPOS 8
+
+#define SCREENON (m_reg[6] & 0x10)
+#define TEST (m_reg[6] & 0x80)
+#define VERTICALPOS (m_reg[6] & 0x07)
+#define HORICONTALPOS (m_reg[7] & 0x07)
+#define ECMON (m_reg[6] & 0x40)
+#define HIRESON (m_reg[6] & 0x20)
+#define MULTICOLORON (m_reg[7] & 0x10)
+#define REVERSEON (!(m_reg[7] & 0x80))
+
+/* hardware inverts character when bit 7 set (character taken &0x7f) */
+/* instead of fetching character with higher number! */
+#define LINES25 (m_reg[6] & 0x08) /* else 24 Lines */
+#define LINES (LINES25 ? 25 : 24)
+#define YSIZE (LINES * 8)
+#define COLUMNS40 (m_reg[7] & 0x08) /* else 38 Columns */
+#define COLUMNS (COLUMNS40 ? 40 : 38)
+#define XSIZE (COLUMNS * 8)
+
+#define INROM (m_reg[0x12] & 0x04)
+#define CHARGENADDR (REVERSEON && !HIRESON && !MULTICOLORON ? ((m_reg[0x13] & 0xfc) << 8) : ((m_reg[0x13] & 0xf8) << 8))
+#define BITMAPADDR ((m_reg[0x12] & 0x38) << 10)
+#define VIDEOADDR ((m_reg[0x14] & 0xf8) << 8)
+
+#define RASTERLINE (((m_reg[0xa] & 0x01) << 8) | m_reg[0xb])
+#define CURSOR1POS (m_reg[0xd] | ((m_reg[0xc] & 0x03) << 8))
+#define CURSOR2POS (m_reg[0x1b] | ((m_reg[0x1a] & 0x03) << 8))
+#define CURSORRATE ((m_reg[0x1f] & 0x7c) >> 2)
+
+#define BACKGROUNDCOLOR (m_reg[0x15] & 0x7f)
+#define FOREGROUNDCOLOR (m_reg[0x16] & 0x7f)
+#define MULTICOLOR1 (m_reg[0x17] & 0x7f)
+#define MULTICOLOR2 (m_reg[0x18] & 0x7f)
+#define FRAMECOLOR (m_reg[0x19] & 0x7f)
+
+#define TED7360_CLOCK (m_clock / 4)
+#define TED7360_VRETRACERATE ((m_clock == TED7360PAL_CLOCK) ? TED7360PAL_VRETRACERATE : TED7360NTSC_VRETRACERATE)
+#define TED7360_LINES ((m_clock == TED7360PAL_CLOCK) ? TED7360PAL_LINES : TED7360NTSC_LINES)
+
+static const rgb_t PALETTE_MOS[] =
+{
+/* black, white, red, cyan */
+/* purple, green, blue, yellow */
+/* orange, light orange, pink, light cyan, */
+/* light violett, light green, light blue, light yellow */
+/* these 16 colors are 8 times here in different luminance (dark..light) */
+/* taken from digitized tv screenshot */
+ rgb_t(0x06, 0x01, 0x03), rgb_t(0x2b, 0x2b, 0x2b), rgb_t(0x67, 0x0e, 0x0f), rgb_t(0x00, 0x3f, 0x42),
+ rgb_t(0x57, 0x00, 0x6d), rgb_t(0x00, 0x4e, 0x00), rgb_t(0x19, 0x1c, 0x94), rgb_t(0x38, 0x38, 0x00),
+ rgb_t(0x56, 0x20, 0x00), rgb_t(0x4b, 0x28, 0x00), rgb_t(0x16, 0x48, 0x00), rgb_t(0x69, 0x07, 0x2f),
+ rgb_t(0x00, 0x46, 0x26), rgb_t(0x06, 0x2a, 0x80), rgb_t(0x2a, 0x14, 0x9b), rgb_t(0x0b, 0x49, 0x00),
+
+ rgb_t(0x00, 0x03, 0x02), rgb_t(0x3d, 0x3d, 0x3d), rgb_t(0x75, 0x1e, 0x20), rgb_t(0x00, 0x50, 0x4f),
+ rgb_t(0x6a, 0x10, 0x78), rgb_t(0x04, 0x5c, 0x00), rgb_t(0x2a, 0x2a, 0xa3), rgb_t(0x4c, 0x47, 0x00),
+ rgb_t(0x69, 0x2f, 0x00), rgb_t(0x59, 0x38, 0x00), rgb_t(0x26, 0x56, 0x00), rgb_t(0x75, 0x15, 0x41),
+ rgb_t(0x00, 0x58, 0x3d), rgb_t(0x15, 0x3d, 0x8f), rgb_t(0x39, 0x22, 0xae), rgb_t(0x19, 0x59, 0x00),
+
+ rgb_t(0x00, 0x03, 0x04), rgb_t(0x42, 0x42, 0x42), rgb_t(0x7b, 0x28, 0x20), rgb_t(0x02, 0x56, 0x59),
+ rgb_t(0x6f, 0x1a, 0x82), rgb_t(0x0a, 0x65, 0x09), rgb_t(0x30, 0x34, 0xa7), rgb_t(0x50, 0x51, 0x00),
+ rgb_t(0x6e, 0x36, 0x00), rgb_t(0x65, 0x40, 0x00), rgb_t(0x2c, 0x5c, 0x00), rgb_t(0x7d, 0x1e, 0x45),
+ rgb_t(0x01, 0x61, 0x45), rgb_t(0x1c, 0x45, 0x99), rgb_t(0x42, 0x2d, 0xad), rgb_t(0x1d, 0x62, 0x00),
+
+ rgb_t(0x05, 0x00, 0x02), rgb_t(0x56, 0x55, 0x5a), rgb_t(0x90, 0x3c, 0x3b), rgb_t(0x17, 0x6d, 0x72),
+ rgb_t(0x87, 0x2d, 0x99), rgb_t(0x1f, 0x7b, 0x15), rgb_t(0x46, 0x49, 0xc1), rgb_t(0x66, 0x63, 0x00),
+ rgb_t(0x84, 0x4c, 0x0d), rgb_t(0x73, 0x55, 0x00), rgb_t(0x40, 0x72, 0x00), rgb_t(0x91, 0x33, 0x5e),
+ rgb_t(0x19, 0x74, 0x5c), rgb_t(0x32, 0x59, 0xae), rgb_t(0x59, 0x3f, 0xc3), rgb_t(0x32, 0x76, 0x00),
+
+ rgb_t(0x02, 0x01, 0x06), rgb_t(0x84, 0x7e, 0x85), rgb_t(0xbb, 0x67, 0x68), rgb_t(0x45, 0x96, 0x96),
+ rgb_t(0xaf, 0x58, 0xc3), rgb_t(0x4a, 0xa7, 0x3e), rgb_t(0x73, 0x73, 0xec), rgb_t(0x92, 0x8d, 0x11),
+ rgb_t(0xaf, 0x78, 0x32), rgb_t(0xa1, 0x80, 0x20), rgb_t(0x6c, 0x9e, 0x12), rgb_t(0xba, 0x5f, 0x89),
+ rgb_t(0x46, 0x9f, 0x83), rgb_t(0x61, 0x85, 0xdd), rgb_t(0x84, 0x6c, 0xef), rgb_t(0x5d, 0xa3, 0x29),
+
+ rgb_t(0x02, 0x00, 0x0a), rgb_t(0xb2, 0xac, 0xb3), rgb_t(0xe9, 0x92, 0x92), rgb_t(0x6c, 0xc3, 0xc1),
+ rgb_t(0xd9, 0x86, 0xf0), rgb_t(0x79, 0xd1, 0x76), rgb_t(0x9d, 0xa1, 0xff), rgb_t(0xbd, 0xbe, 0x40),
+ rgb_t(0xdc, 0xa2, 0x61), rgb_t(0xd1, 0xa9, 0x4c), rgb_t(0x93, 0xc8, 0x3d), rgb_t(0xe9, 0x8a, 0xb1),
+ rgb_t(0x6f, 0xcd, 0xab), rgb_t(0x8a, 0xb4, 0xff), rgb_t(0xb2, 0x9a, 0xff), rgb_t(0x88, 0xcb, 0x59),
+
+ rgb_t(0x02, 0x00, 0x0a), rgb_t(0xc7, 0xca, 0xc9), rgb_t(0xff, 0xac, 0xac), rgb_t(0x85, 0xd8, 0xe0),
+ rgb_t(0xf3, 0x9c, 0xff), rgb_t(0x92, 0xea, 0x8a), rgb_t(0xb7, 0xba, 0xff), rgb_t(0xd6, 0xd3, 0x5b),
+ rgb_t(0xf3, 0xbe, 0x79), rgb_t(0xe6, 0xc5, 0x65), rgb_t(0xb0, 0xe0, 0x57), rgb_t(0xff, 0xa4, 0xcf),
+ rgb_t(0x89, 0xe5, 0xc8), rgb_t(0xa4, 0xca, 0xff), rgb_t(0xca, 0xb3, 0xff), rgb_t(0xa2, 0xe5, 0x7a),
+
+ rgb_t(0x01, 0x01, 0x01), rgb_t(0xff, 0xff, 0xff), rgb_t(0xff, 0xf6, 0xf2), rgb_t(0xd1, 0xff, 0xff),
+ rgb_t(0xff, 0xe9, 0xff), rgb_t(0xdb, 0xff, 0xd3), rgb_t(0xfd, 0xff, 0xff), rgb_t(0xff, 0xff, 0xa3),
+ rgb_t(0xff, 0xff, 0xc1), rgb_t(0xff, 0xff, 0xb2), rgb_t(0xfc, 0xff, 0xa2), rgb_t(0xff, 0xee, 0xff),
+ rgb_t(0xd1, 0xff, 0xff), rgb_t(0xeb, 0xff, 0xff), rgb_t(0xff, 0xf8, 0xff), rgb_t(0xed, 0xff, 0xbc)
+};
+
+
+#define NOISE_BUFFER_SIZE_SEC 5
+
+#define TONE_ON (!(m_reg[0x11] & 0x80)) /* or tone update!? */
+#define TONE1_ON ((m_reg[0x11] & 0x10))
+#define TONE1_VALUE (m_reg[0x0e] | ((m_reg[0x12] & 3) << 8))
+#define TONE2_ON ((m_reg[0x11] & 0x20))
+#define TONE2_VALUE (m_reg[0x0f] | ((m_reg[0x10] & 3) << 8))
+#define VOLUME (m_reg[0x11] & 0x0f)
+#define NOISE_ON (m_reg[0x11] & 0x40)
+
+/*
+ * pal 111860.781
+ * ntsc 111840.45
+ */
+#define TONE_FREQUENCY(reg) ((TED7360_CLOCK >> 3) / (1024 - reg))
+#define TONE_FREQUENCY_MIN (TONE_FREQUENCY(0))
+#define NOISE_FREQUENCY (TED7360_CLOCK / 8 / (1024 - TONE2_VALUE))
+#define NOISE_FREQUENCY_MAX (TED7360_CLOCK / 8)
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+// device type definition
+const device_type MOS7360 = &device_creator<mos7360_device>;
+
+
+// default address maps
+static ADDRESS_MAP_START( mos7360_videoram_map, AS_0, 8, mos7360_device )
+ AM_RANGE(0x0000, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+// memory_space_config - return a description of
+// any address spaces owned by this device
+//-------------------------------------------------
+
+const address_space_config *mos7360_device::memory_space_config(address_spacenum spacenum) const
+{
+ switch (spacenum)
+ {
+ case AS_0: return &m_videoram_space_config;
+ default: return NULL;
+ }
+}
+
+
+
+//**************************************************************************
+// INLINE HELPERS
+//**************************************************************************
+
+inline void mos7360_device::set_interrupt(int mask)
+{
+ /* kernel itself polls for timer 2 shot (interrupt disabled!) when cassette loading */
+ m_reg[9] |= mask;
+ if ((m_reg[0xa] & m_reg[9] & 0x5e))
+ {
+ if (!(m_reg[9] & 0x80))
+ {
+ //DBG_LOG(1, "ted7360", ("irq start %.2x\n", mask));
+ m_reg[9] |= 0x80;
+ m_write_irq(ASSERT_LINE);
+ }
+ }
+ m_reg[9] |= mask;
+}
+
+inline void mos7360_device::clear_interrupt(int mask)
+{
+ m_reg[9] &= ~mask;
+ if ((m_reg[9] & 0x80) && !(m_reg[9] & m_reg[0xa] & 0x5e))
+ {
+ DBG_LOG(1, "ted7360", ("irq end %.2x\n", mask));
+ m_reg[9] &= ~0x80;
+ m_write_irq(CLEAR_LINE);
+ }
+}
+
+inline int mos7360_device::rastercolumn()
+{
+ return (int) ((machine().time().as_double() - m_rastertime) * TED7360_VRETRACERATE * m_lines * 57 * 8 + 0.5);
+}
+
+inline UINT8 mos7360_device::read_ram(offs_t offset)
+{
+ int rom = m_rom;
+ m_rom = 0;
+
+ m_last_data = space(AS_0).read_byte(offset);
+
+ m_rom = rom;
+
+ return m_last_data;
+}
+
+inline UINT8 mos7360_device::read_rom(offs_t offset)
+{
+ int rom = m_rom;
+ m_rom = 1;
+
+ m_last_data = space(AS_0).read_byte(offset);
+
+ m_rom = rom;
+
+ return m_last_data;
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// mos7360_device - constructor
+//-------------------------------------------------
+
+mos7360_device::mos7360_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, MOS7360, "MOS7360", tag, owner, clock, "mos7360", __FILE__),
+ device_memory_interface(mconfig, *this),
+ device_sound_interface(mconfig, *this),
+ device_video_interface(mconfig, *this),
+ m_videoram_space_config("videoram", ENDIANNESS_LITTLE, 8, 16, 0, NULL, *ADDRESS_MAP_NAME(mos7360_videoram_map)),
+ m_write_irq(*this),
+ m_read_k(*this),
+ m_stream(NULL)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void mos7360_device::device_start()
+{
+ // get the CPU device
+ m_cpu = machine().device<cpu_device>(m_cpu_tag);
+ assert(m_cpu != NULL);
+
+ // resolve callbacks
+ m_write_irq.resolve_safe();
+ m_read_k.resolve_safe(0xff);
+
+ // allocate timers
+ m_timer1 = timer_alloc(TIMER_ID_1);
+ m_timer2 = timer_alloc(TIMER_ID_2);
+ m_timer3 = timer_alloc(TIMER_ID_3);
+ m_line_timer = timer_alloc(TIMER_LINE);
+ m_line_timer->adjust(m_screen->scan_period(), 0, m_screen->scan_period());
+ m_frame_timer = timer_alloc(TIMER_FRAME);
+ m_frame_timer->adjust(m_screen->frame_period(), 0, m_screen->frame_period());
+
+ // allocate screen bitmap
+ m_screen->register_screen_bitmap(m_bitmap);
+
+ // create sound stream
+ m_stream = machine().sound().stream_alloc(*this, 0, 1, machine().sample_rate());
+
+ // buffer for fastest played sample for 5 second so we have enough data for min 5 second
+ m_noisesize = NOISE_FREQUENCY_MAX * NOISE_BUFFER_SIZE_SEC;
+ m_noise = auto_alloc_array(machine(), UINT8, m_noisesize);
+
+ {
+ int noiseshift = 0x7ffff8;
+ UINT8 data;
+
+ for (int i = 0; i < m_noisesize; i++)
+ {
+ data = 0;
+ if (noiseshift & 0x400000)
+ data |= 0x80;
+ if (noiseshift & 0x100000)
+ data |= 0x40;
+ if (noiseshift & 0x010000)
+ data |= 0x20;
+ if (noiseshift & 0x002000)
+ data |= 0x10;
+ if (noiseshift & 0x000800)
+ data |= 0x08;
+ if (noiseshift & 0x000080)
+ data |= 0x04;
+ if (noiseshift & 0x000010)
+ data |= 0x02;
+ if (noiseshift & 0x000004)
+ data |= 0x01;
+ m_noise[i] = data;
+ if (((noiseshift & 0x400000) == 0) != ((noiseshift & 0x002000) == 0))
+ noiseshift = (noiseshift << 1) | 1;
+ else
+ noiseshift <<= 1;
+ }
+ }
+
+ // register for state saving
+ save_item(NAME(m_reg));
+ save_item(NAME(m_last_data));
+ save_item(NAME(m_rom));
+ save_item(NAME(m_frame_count));
+ save_item(NAME(m_lines));
+ save_item(NAME(m_timer1_active));
+ save_item(NAME(m_timer2_active));
+ save_item(NAME(m_timer3_active));
+ save_item(NAME(m_cursor1));
+ save_item(NAME(m_chargenaddr));
+ save_item(NAME(m_bitmapaddr));
+ save_item(NAME(m_videoaddr));
+ save_item(NAME(m_x_begin));
+ save_item(NAME(m_x_end));
+ save_item(NAME(m_y_begin));
+ save_item(NAME(m_y_end));
+ save_item(NAME(m_c16_bitmap));
+ save_item(NAME(m_bitmapmulti));
+ save_item(NAME(m_mono));
+ save_item(NAME(m_monoinversed));
+ save_item(NAME(m_multi));
+ save_item(NAME(m_ecmcolor));
+ save_item(NAME(m_colors));
+ save_item(NAME(m_rasterline));
+ save_item(NAME(m_lastline));
+ save_item(NAME(m_rastertime));
+ save_item(NAME(m_tone1pos));
+ save_item(NAME(m_tone2pos));
+ save_item(NAME(m_tone1samples));
+ save_item(NAME(m_tone2samples));
+ save_item(NAME(m_noisepos));
+ save_item(NAME(m_noisesamples));
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void mos7360_device::device_reset()
+{
+ memset(m_reg, 0, sizeof(m_reg));
+ m_last_data = 0;
+
+ m_rom = 1; // FIXME: at start should be RAM or ROM? old c16 code set it to ROM at init: is it correct?
+
+ m_lines = TED7360_LINES;
+ m_chargenaddr = m_bitmapaddr = m_videoaddr = 0;
+ m_timer1_active = m_timer2_active = m_timer3_active = 0;
+ m_cursor1 = 0;
+
+ m_rasterline = 0;
+ m_lastline = 0;
+
+ m_rastertime = 0.0;
+
+ m_frame_count = 0;
+
+ m_x_begin = 0;
+ m_x_end = 0;
+ m_y_begin = 0;
+ m_y_end = 0;
+
+ memset(m_c16_bitmap, 0, sizeof(m_c16_bitmap));
+ memset(m_bitmapmulti, 0, sizeof(m_bitmapmulti));
+ memset(m_mono, 0, sizeof(m_mono));
+ memset(m_monoinversed, 0, sizeof(m_monoinversed));
+ memset(m_multi, 0, sizeof(m_multi));
+ memset(m_ecmcolor, 0, sizeof(m_ecmcolor));
+ memset(m_colors, 0, sizeof(m_colors));
+
+ m_tone1pos = 0;
+ m_tone2pos = 0;
+ m_tone1samples = 1;
+ m_tone2samples = 1;
+ m_noisepos = 0;
+ m_noisesamples = 1;
+}
+
+
+//-------------------------------------------------
+// device_timer - handler timer events
+//-------------------------------------------------
+
+void mos7360_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
+{
+ switch (id)
+ {
+ case TIMER_ID_1:
+ // proved by digisound of several intros like eoroidpro
+ m_timer1->adjust(clocks_to_attotime(TIMER1), 1);
+ m_timer1_active = 1;
+ set_interrupt(0x08);
+ break;
+
+ case TIMER_ID_2:
+ m_timer2->adjust(clocks_to_attotime(0x10000), 2);
+ m_timer2_active = 1;
+ set_interrupt(0x10);
+ break;
+
+ case TIMER_ID_3:
+ m_timer3->adjust(clocks_to_attotime(0x10000), 3);
+ m_timer3_active = 1;
+ set_interrupt(0x40);
+ break;
+
+ case TIMER_LINE:
+ raster_interrupt_gen();
+ break;
+
+ case TIMER_FRAME:
+ frame_interrupt_gen();
+ break;
+ }
+}
+
+
+//-------------------------------------------------
+// sound_stream_update - handle update requests for
+// our sound stream
+//-------------------------------------------------
+
+void mos7360_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
+{
+ int i, v, a;
+ stream_sample_t *buffer = outputs[0];
+
+ for (i = 0; i < samples; i++)
+ {
+ v = 0;
+
+ if (TONE1_ON)
+ {
+ if (m_tone1pos <= m_tone1samples / 2 || !TONE_ON)
+ v += 0x2ff; // depends on the volume between sound and noise
+
+ m_tone1pos++;
+
+ if (m_tone1pos > m_tone1samples)
+ m_tone1pos = 0;
+ }
+
+ if (TONE2_ON || NOISE_ON )
+ {
+ if (TONE2_ON)
+ { /*higher priority ?! */
+ if (m_tone2pos <= m_tone2samples / 2 || !TONE_ON)
+ v += 0x2ff;
+
+ m_tone2pos++;
+
+ if (m_tone2pos > m_tone2samples)
+ m_tone2pos = 0;
+ }
+ else
+ {
+ v += m_noise[(int) ((double) m_noisepos * m_noisesize / m_noisesamples)];
+ m_noisepos++;
+
+ if ((double) m_noisepos / m_noisesamples >= 1.0)
+ m_noisepos = 0;
+ }
+ }
+
+ a = VOLUME;
+ if (a > 8)
+ a = 8;
+
+ v = v * a;
+
+ buffer[i] = v;
+ }
+}
+
+
+void mos7360_device::draw_character(int ybegin, int yend, int ch, int yoff, int xoff, UINT16 *color)
+{
+ int y, code;
+
+ for (y = ybegin; y <= yend; y++)
+ {
+ if (INROM)
+ code = read_rom(m_chargenaddr + ch * 8 + y);
+ else
+ code = read_ram(m_chargenaddr + ch * 8 + y);
+
+ m_bitmap.pix32(y + yoff, 0 + xoff) = PALETTE_MOS[color[code >> 7]];
+ m_bitmap.pix32(y + yoff, 1 + xoff) = PALETTE_MOS[color[(code >> 6) & 1]];
+ m_bitmap.pix32(y + yoff, 2 + xoff) = PALETTE_MOS[color[(code >> 5) & 1]];
+ m_bitmap.pix32(y + yoff, 3 + xoff) = PALETTE_MOS[color[(code >> 4) & 1]];
+ m_bitmap.pix32(y + yoff, 4 + xoff) = PALETTE_MOS[color[(code >> 3) & 1]];
+ m_bitmap.pix32(y + yoff, 5 + xoff) = PALETTE_MOS[color[(code >> 2) & 1]];
+ m_bitmap.pix32(y + yoff, 6 + xoff) = PALETTE_MOS[color[(code >> 1) & 1]];
+ m_bitmap.pix32(y + yoff, 7 + xoff) = PALETTE_MOS[color[code & 1]];
+ }
+}
+
+void mos7360_device::draw_character_multi(int ybegin, int yend, int ch, int yoff, int xoff)
+{
+ int y, code;
+
+ for (y = ybegin; y <= yend; y++)
+ {
+ if (INROM)
+ code = read_rom(m_chargenaddr + ch * 8 + y);
+ else
+ code = read_ram(m_chargenaddr + ch * 8 + y);
+
+ m_bitmap.pix32(y + yoff, 0 + xoff) =
+ m_bitmap.pix32(y + yoff, 1 + xoff) = PALETTE_MOS[m_multi[code >> 6]];
+ m_bitmap.pix32(y + yoff, 2 + xoff) =
+ m_bitmap.pix32(y + yoff, 3 + xoff) = PALETTE_MOS[m_multi[(code >> 4) & 3]];
+ m_bitmap.pix32(y + yoff, 4 + xoff) =
+ m_bitmap.pix32(y + yoff, 5 + xoff) = PALETTE_MOS[m_multi[(code >> 2) & 3]];
+ m_bitmap.pix32(y + yoff, 6 + xoff) =
+ m_bitmap.pix32(y + yoff, 7 + xoff) = PALETTE_MOS[m_multi[code & 3]];
+ }
+}
+
+void mos7360_device::draw_bitmap(int ybegin, int yend, int ch, int yoff, int xoff)
+{
+ int y, code;
+
+ for (y = ybegin; y <= yend; y++)
+ {
+ code = read_ram(m_bitmapaddr + ch * 8 + y);
+
+ m_bitmap.pix32(y + yoff, 0 + xoff) = PALETTE_MOS[m_c16_bitmap[code >> 7]];
+ m_bitmap.pix32(y + yoff, 1 + xoff) = PALETTE_MOS[m_c16_bitmap[(code >> 6) & 1]];
+ m_bitmap.pix32(y + yoff, 2 + xoff) = PALETTE_MOS[m_c16_bitmap[(code >> 5) & 1]];
+ m_bitmap.pix32(y + yoff, 3 + xoff) = PALETTE_MOS[m_c16_bitmap[(code >> 4) & 1]];
+ m_bitmap.pix32(y + yoff, 4 + xoff) = PALETTE_MOS[m_c16_bitmap[(code >> 3) & 1]];
+ m_bitmap.pix32(y + yoff, 5 + xoff) = PALETTE_MOS[m_c16_bitmap[(code >> 2) & 1]];
+ m_bitmap.pix32(y + yoff, 6 + xoff) = PALETTE_MOS[m_c16_bitmap[(code >> 1) & 1]];
+ m_bitmap.pix32(y + yoff, 7 + xoff) = PALETTE_MOS[m_c16_bitmap[code & 1]];
+ }
+}
+
+void mos7360_device::draw_bitmap_multi(int ybegin, int yend, int ch, int yoff, int xoff)
+{
+ int y, code;
+
+ for (y = ybegin; y <= yend; y++)
+ {
+ code = read_ram(m_bitmapaddr + ch * 8 + y);
+
+ m_bitmap.pix32(y + yoff, 0 + xoff) =
+ m_bitmap.pix32(y + yoff, 1 + xoff) = PALETTE_MOS[m_bitmapmulti[code >> 6]];
+ m_bitmap.pix32(y + yoff, 2 + xoff) =
+ m_bitmap.pix32(y + yoff, 3 + xoff) = PALETTE_MOS[m_bitmapmulti[(code >> 4) & 3]];
+ m_bitmap.pix32(y + yoff, 4 + xoff) =
+ m_bitmap.pix32(y + yoff, 5 + xoff) = PALETTE_MOS[m_bitmapmulti[(code >> 2) & 3]];
+ m_bitmap.pix32(y + yoff, 6 + xoff) =
+ m_bitmap.pix32(y + yoff, 7 + xoff) = PALETTE_MOS[m_bitmapmulti[code & 3]];
+ }
+}
+
+void mos7360_device::draw_cursor(int ybegin, int yend, int yoff, int xoff, int color)
+{
+ int y;
+
+ for (y = ybegin; y <= yend; y++)
+ {
+ for (int x = 0; x < 8; x++)
+ {
+ m_bitmap.pix32(y + yoff, x + xoff) = PALETTE_MOS[color];
+ }
+ }
+}
+
+void mos7360_device::drawlines(int first, int last)
+{
+ int line, vline, end;
+ int attr, ch, c1, c2, ecm;
+ int offs, yoff, xoff, ybegin, yend, xbegin, xend;
+ int i;
+
+ m_lastline = last;
+
+ /* top part of display not rastered */
+ first -= TED7360_YPOS;
+ last -= TED7360_YPOS;
+ if ((first >= last) || (last <= 0))
+ return;
+ if (first < 0)
+ first = 0;
+
+ if (!SCREENON)
+ {
+ for (line = first; (line < last) && (line < m_bitmap.height()); line++)
+ {
+ for (int x = 0; x < m_bitmap.width(); x++)
+ {
+ m_bitmap.pix32(line, x) = PALETTE_MOS[0];
+ }
+ }
+ return;
+ }
+
+ if (COLUMNS40)
+ xbegin = XPOS, xend = xbegin + 320;
+ else
+ xbegin = XPOS + 7, xend = xbegin + 304;
+
+ if (last < m_y_begin)
+ end = last;
+ else
+ end = m_y_begin + YPOS;
+ {
+ for (line = first; line < end; line++)
+ {
+ for (int x = 0; x < m_bitmap.width(); x++)
+ {
+ m_bitmap.pix32(line, x) = PALETTE_MOS[FRAMECOLOR];
+ }
+ }
+ }
+ if (LINES25)
+ vline = line - m_y_begin - YPOS;
+ else
+ vline = line - m_y_begin - YPOS + 8 - VERTICALPOS;
+
+ if (last < m_y_end + YPOS)
+ end = last;
+ else
+ end = m_y_end + YPOS;
+
+ for (; line < end; vline = (vline + 8) & ~7, line = line + 1 + yend - ybegin)
+ {
+ offs = (vline >> 3) * 40;
+ ybegin = vline & 7;
+ yoff = line - ybegin;
+ yend = (yoff + 7 < end) ? 7 : (end - yoff - 1);
+ /* rendering 39 characters */
+ /* left and right borders are overwritten later */
+
+ for (xoff = m_x_begin + XPOS; xoff < m_x_end + XPOS; xoff += 8, offs++)
+ {
+ if (HIRESON)
+ {
+ ch = read_ram((m_videoaddr | 0x400) + offs);
+ attr = read_ram(m_videoaddr + offs);
+ c1 = ((ch >> 4) & 0xf) | (attr << 4);
+ c2 = (ch & 0xf) | (attr & 0x70);
+ m_bitmapmulti[1] = m_c16_bitmap[1] = c1 & 0x7f;
+ m_bitmapmulti[2] = m_c16_bitmap[0] = c2 & 0x7f;
+ if (MULTICOLORON)
+ {
+ draw_bitmap_multi(ybegin, yend, offs, yoff, xoff);
+ }
+ else
+ {
+ draw_bitmap(ybegin, yend, offs, yoff, xoff);
+ }
+ }
+ else
+ {
+ ch = read_ram((m_videoaddr | 0x400) + offs);
+ attr = read_ram(m_videoaddr + offs);
+ // levente harsfalvi's docu says cursor off in ecm and multicolor
+ if (ECMON)
+ {
+ // hardware reverse off
+ ecm = ch >> 6;
+ m_ecmcolor[0] = m_colors[ecm];
+ m_ecmcolor[1] = attr & 0x7f;
+ draw_character(ybegin, yend, ch & ~0xc0, yoff, xoff, m_ecmcolor);
+ }
+ else if (MULTICOLORON)
+ {
+ // hardware reverse off
+ if (attr & 8)
+ {
+ m_multi[3] = attr & 0x77;
+ draw_character_multi(ybegin, yend, ch, yoff, xoff);
+ }
+ else
+ {
+ m_mono[1] = attr & 0x7f;
+ draw_character(ybegin, yend, ch, yoff, xoff, m_mono);
+ }
+ }
+ else if (m_cursor1 && (offs == CURSOR1POS))
+ {
+ draw_cursor(ybegin, yend, yoff, xoff, attr & 0x7f);
+ }
+ else if (REVERSEON && (ch & 0x80))
+ {
+ m_monoinversed[0] = attr & 0x7f;
+ if (m_cursor1 && (attr & 0x80))
+ draw_cursor(ybegin, yend, yoff, xoff, m_monoinversed[0]);
+ else
+ draw_character(ybegin, yend, ch & ~0x80, yoff, xoff, m_monoinversed);
+ }
+ else
+ {
+ m_mono[1] = attr & 0x7f;
+ if (m_cursor1 && (attr & 0x80))
+ draw_cursor(ybegin, yend, yoff, xoff, m_mono[0]);
+ else
+ draw_character(ybegin, yend, ch, yoff, xoff, m_mono);
+ }
+ }
+ }
+
+ for (i = ybegin; i <= yend; i++)
+ {
+ for (int x = 0; x < xbegin; x++)
+ {
+ m_bitmap.pix32(yoff + i, x) = PALETTE_MOS[FRAMECOLOR];
+ }
+
+ for (int x = xend; x < m_bitmap.width(); x++)
+ {
+ m_bitmap.pix32(yoff + i, x) = PALETTE_MOS[FRAMECOLOR];
+ }
+ }
+ }
+
+ if (last < m_bitmap.height())
+ end = last;
+ else
+ end = m_bitmap.height();
+
+ for (; line < end; line++)
+ {
+ for (int x = 0; x < m_bitmap.width(); x++)
+ {
+ m_bitmap.pix32(line, x) = PALETTE_MOS[FRAMECOLOR];
+ }
+ }
+}
+
+void mos7360_device::soundport_w(int offset, int data)
+{
+ // int old = m_reg[offset & 0x1f];
+ m_stream->update();
+
+ switch (offset)
+ {
+ case 0x0e:
+ case 0x12:
+ if (offset == 0x12)
+ m_reg[offset & 0x1f] = (m_reg[offset & 0x1f] & ~3) | (data & 3);
+ else
+ m_reg[offset & 0x1f] = data;
+
+ m_tone1samples = machine().sample_rate() / TONE_FREQUENCY (TONE1_VALUE);
+ DBG_LOG(1, "ted7360", ("tone1 %d %d sample:%d\n", TONE1_VALUE, TONE_FREQUENCY(TONE1_VALUE), m_tone1samples));
+ break;
+
+ case 0xf:
+ case 0x10:
+ m_reg[offset & 0x1f] = data;
+
+ m_tone2samples = machine().sample_rate() / TONE_FREQUENCY (TONE2_VALUE);
+ DBG_LOG (1, "ted7360", ("tone2 %d %d sample:%d\n", TONE2_VALUE, TONE_FREQUENCY(TONE2_VALUE), m_tone2samples));
+
+ m_noisesamples = (int) ((double) NOISE_FREQUENCY_MAX * machine().sample_rate() * NOISE_BUFFER_SIZE_SEC / NOISE_FREQUENCY);
+ DBG_LOG (1, "ted7360", ("noise %d sample:%d\n", NOISE_FREQUENCY, m_noisesamples));
+
+ if (!NOISE_ON || ((double) m_noisepos / m_noisesamples >= 1.0))
+ m_noisepos = 0;
+ break;
+
+ case 0x11:
+ m_reg[offset & 0x1f] = data;
+ DBG_LOG(1, "ted7360", ("%s volume %d, %s %s %s\n", TONE_ON?"on":"off",
+ VOLUME, TONE1_ON?"tone1":"", TONE2_ON?"tone2":"", NOISE_ON?"noise":""));
+
+ if (!TONE_ON||!TONE1_ON) m_tone1pos = 0;
+ if (!TONE_ON||!TONE2_ON) m_tone2pos = 0;
+ if (!TONE_ON||!NOISE_ON) m_noisepos = 0;
+ break;
+ }
+}
+
+
+//-------------------------------------------------
+// read - register read
+//-------------------------------------------------
+
+UINT8 mos7360_device::read(address_space &space, offs_t offset, int &cs0, int &cs1)
+{
+ UINT8 val = m_last_data;
+
+ cs0 = cs0_r(offset);
+ cs1 = cs1_r(offset);
+
+ switch (offset)
+ {
+ case 0xff00:
+ val = attotime_to_clocks(m_timer1->remaining()) & 0xff;
+ break;
+ case 0xff01:
+ val = attotime_to_clocks(m_timer1->remaining()) >> 8;
+ break;
+ case 0xff02:
+ val = attotime_to_clocks(m_timer2->remaining()) & 0xff;
+ break;
+ case 0xff03:
+ val = attotime_to_clocks(m_timer2->remaining()) >> 8;
+ break;
+ case 0xff04:
+ val = attotime_to_clocks(m_timer3->remaining()) & 0xff;
+ break;
+ case 0xff05:
+ val = attotime_to_clocks(m_timer3->remaining()) >> 8;
+ break;
+ case 0xff07:
+ val = (m_reg[offset & 0x1f] & ~0x40);
+ if (m_clock == TED7360NTSC_CLOCK)
+ val |= 0x40;
+ break;
+ case 0xff13:
+ val = m_reg[offset & 0x1f] & ~1;
+ if (m_rom)
+ val |= 1;
+ break;
+ case 0xff1c: /*rasterline */
+ drawlines(m_lastline, m_rasterline);
+ val = ((RASTERLINE_2_C16(m_rasterline) & 0x100) >> 8) | 0xfe; /* expected by matrix */
+ break;
+ case 0xff1d: /*rasterline */
+ drawlines(m_lastline, m_rasterline);
+ val = RASTERLINE_2_C16(m_rasterline) & 0xff;
+ break;
+ case 0xff1e: /*rastercolumn */
+ val = rastercolumn() / 2; /* pengo >=0x99 */
+ break;
+ case 0xff1f:
+ val = ((m_rasterline & 7) << 4) | (m_reg[offset & 0x1f] & 0x0f);
+ DBG_LOG(1, "port_w", ("read from cursorblink %.2x\n", val));
+ break;
+ case 0xff06:
+ case 0xff08:
+ case 0xff09:
+ case 0xff0a:
+ case 0xff0b:
+ case 0xff0c:
+ case 0xff0d:
+ case 0xff0e:
+ case 0xff0f:
+ case 0xff10:
+ case 0xff11:
+ case 0xff12:
+ case 0xff14:
+ case 0xff15:
+ case 0xff16:
+ case 0xff17:
+ case 0xff18:
+ case 0xff19:
+ case 0xff1a:
+ case 0xff1b:
+ val = m_reg[offset & 0x1f];
+ break;
+ }
+
+ return val;
+}
+
+
+//-------------------------------------------------
+// write - register write
+//-------------------------------------------------
+
+void mos7360_device::write(address_space &space, offs_t offset, UINT8 data, int &cs0, int &cs1)
+{
+ int old;
+
+ cs0 = cs0_r(offset);
+ cs1 = cs1_r(offset);
+
+ switch (offset)
+ {
+ case 0xff0e:
+ case 0xff0f:
+ case 0xff10:
+ case 0xff11:
+ case 0xff12:
+ soundport_w(offset & 0x1f, data);
+ break;
+ }
+
+ switch (offset)
+ {
+ case 0xff00: /* stop timer 1 */
+ m_reg[offset & 0x1f] = data;
+
+ if (m_timer1_active)
+ {
+ m_reg[1] = attotime_to_clocks(m_timer1->remaining()) >> 8;
+ m_timer1->reset();
+ m_timer1_active = 0;
+ }
+ break;
+ case 0xff01: /* start timer 1 */
+ m_reg[offset & 0x1f] = data;
+ m_timer1->adjust(clocks_to_attotime(TIMER1), 1);
+ m_timer1_active = 1;
+ break;
+ case 0xff02: /* stop timer 2 */
+ m_reg[offset & 0x1f] = data;
+ if (m_timer2_active)
+ {
+ m_reg[3] = attotime_to_clocks(m_timer2->remaining()) >> 8;
+ m_timer2->reset();
+ m_timer2_active = 0;
+ }
+ break;
+ case 0xff03: /* start timer 2 */
+ m_reg[offset & 0x1f] = data;
+ m_timer2->adjust(clocks_to_attotime(TIMER2), 2);
+ m_timer2_active = 1;
+ break;
+ case 0xff04: /* stop timer 3 */
+ m_reg[offset & 0x1f] = data;
+ if (m_timer3_active)
+ {
+ m_reg[5] = attotime_to_clocks(m_timer3->remaining()) >> 8;
+ m_timer3->reset();
+ m_timer3_active = 0;
+ }
+ break;
+ case 0xff05: /* start timer 3 */
+ m_reg[offset & 0x1f] = data;
+ m_timer3->adjust(clocks_to_attotime(TIMER3), 3);
+ m_timer3_active = 1;
+ break;
+ case 0xff06:
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ if (LINES25)
+ {
+ m_y_begin = 0;
+ m_y_end = m_y_begin + 200;
+ }
+ else
+ {
+ m_y_begin = 4;
+ m_y_end = m_y_begin + 192;
+ }
+ m_chargenaddr = CHARGENADDR;
+ }
+ break;
+ case 0xff07:
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ if (COLUMNS40)
+ {
+ m_x_begin = 0;
+ m_x_end = m_x_begin + 320;
+ }
+ else
+ {
+ m_x_begin = HORICONTALPOS;
+ m_x_end = m_x_begin + 320;
+ }
+ DBG_LOG(3, "port_w", ("%s %s\n", data & 0x40 ? "ntsc" : "pal", data & 0x20 ? "hori freeze" : ""));
+ m_chargenaddr = CHARGENADDR;
+ }
+ break;
+ case 0xff08:
+ m_reg[offset & 0x1f] = m_read_k(data);
+ break;
+ case 0xff09:
+ if (data & 0x08)
+ clear_interrupt(8);
+ if (data & 0x10)
+ clear_interrupt(0x10);
+ if (data & 0x40)
+ clear_interrupt(0x40);
+ if (data & 0x02)
+ clear_interrupt(2);
+ break;
+ case 0xff0a:
+ old = data;
+ m_reg[offset & 0x1f] = data | 0xa0;
+#if 0
+ m_reg[9] = (m_reg[9] & 0xa1) | (m_reg[9] & data & 0x5e);
+ if (m_reg[9] & 0x80)
+ clear_interrupt(0);
+#endif
+ if ((data ^ old) & 1)
+ {
+ /* DBG_LOG(1,"set rasterline hi",("soll:%d\n",RASTERLINE)); */
+ }
+ break;
+ case 0xff0b:
+ if (data != m_reg[offset & 0x1f])
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ /* DBG_LOG(1,"set rasterline lo",("soll:%d\n",RASTERLINE)); */
+ }
+ break;
+ case 0xff0c:
+ case 0xff0d:
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ }
+ break;
+ case 0xff12:
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_bitmapaddr = BITMAPADDR;
+ m_chargenaddr = CHARGENADDR;
+ DBG_LOG(3, "port_w", ("bitmap %.4x %s\n", BITMAPADDR, INROM ? "rom" : "ram"));
+ }
+ break;
+ case 0xff13:
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_chargenaddr = CHARGENADDR;
+ DBG_LOG(3, "port_w", ("chargen %.4x %s %d\n", CHARGENADDR, data & 2 ? "" : "doubleclock", data & 1));
+ }
+ break;
+ case 0xff14:
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_videoaddr = VIDEOADDR;
+ DBG_LOG(3, "port_w", ("videoram %.4x\n", VIDEOADDR));
+ }
+ break;
+ case 0xff15: /* backgroundcolor */
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_monoinversed[1] = m_mono[0] = m_bitmapmulti[0] = m_multi[0] = m_colors[0] = BACKGROUNDCOLOR;
+ }
+ break;
+ case 0xff16: /* foregroundcolor */
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_bitmapmulti[3] = m_multi[1] = m_colors[1] = FOREGROUNDCOLOR;
+ }
+ break;
+ case 0xff17: /* multicolor 1 */
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_multi[2] = m_colors[2] = MULTICOLOR1;
+ }
+ break;
+ case 0xff18: /* multicolor 2 */
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_colors[3] = MULTICOLOR2;
+ }
+ break;
+ case 0xff19: /* framecolor */
+ if (m_reg[offset & 0x1f] != data)
+ {
+ drawlines(m_lastline, m_rasterline);
+ m_reg[offset & 0x1f] = data;
+ m_colors[4] = FRAMECOLOR;
+ }
+ break;
+ case 0xff1c:
+ m_reg[offset & 0x1f] = data; /*? */
+ DBG_LOG(1, "port_w", ("write to rasterline high %.2x\n",
+ data));
+ break;
+ case 0xff1f:
+ m_reg[offset & 0x1f] = data;
+ DBG_LOG(1, "port_w", ("write to cursorblink %.2x\n", data));
+ break;
+ case 0xff3e:
+ m_rom = 1;
+ break;
+ case 0xff3f:
+ m_rom = 0;
+ break;
+ case 0xff1a:
+ case 0xff1b:
+ case 0xff1d:
+ case 0xff1e:
+ m_reg[offset & 0x1f] = data;
+ break;
+ }
+}
+
+
+//-------------------------------------------------
+// update_screen - update screen
+//-------------------------------------------------
+
+UINT32 mos7360_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
+{
+ copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect);
+
+ return 0;
+}
+
+void mos7360_device::frame_interrupt_gen()
+{
+ if ((m_reg[0x1f] & 0xf) >= 0x0f)
+ {
+ /* if (m_frame_count >= CURSORRATE) */
+ m_cursor1 ^= 1;
+ m_reg[0x1f] &= ~0xf;
+ m_frame_count = 0;
+ }
+ else
+ m_reg[0x1f]++;
+}
+
+void mos7360_device::raster_interrupt_gen()
+{
+ m_rasterline++;
+ m_rastertime = machine().time().as_double();
+ if (m_rasterline >= m_lines)
+ {
+ m_rasterline = 0;
+ drawlines(m_lastline, TED7360_LINES);
+ m_lastline = 0;
+ }
+
+ if (m_rasterline == C16_2_RASTERLINE(RASTERLINE))
+ {
+ drawlines(m_lastline, m_rasterline);
+ set_interrupt(2);
+ }
+}
+
+
+//-------------------------------------------------
+// cs0_r - chip select 0 read
+//-------------------------------------------------
+
+int mos7360_device::cs0_r(offs_t offset)
+{
+ if (m_rom && offset >= 0x8000 && offset < 0xc000)
+ {
+ return 0;
+ }
+
+ return 1;
+}
+
+
+//-------------------------------------------------
+// cs1_r - chip select 1 read
+//-------------------------------------------------
+
+int mos7360_device::cs1_r(offs_t offset)
+{
+ if (m_rom && ((offset >= 0xc000 && offset < 0xfd00) || (offset >= 0xff20)))
+ {
+ return 0;
+ }
+
+ return 1;
+}