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-rw-r--r--src/devices/cpu/alto2/a2disp.c874
1 files changed, 874 insertions, 0 deletions
diff --git a/src/devices/cpu/alto2/a2disp.c b/src/devices/cpu/alto2/a2disp.c
new file mode 100644
index 00000000000..3f902431efa
--- /dev/null
+++ b/src/devices/cpu/alto2/a2disp.c
@@ -0,0 +1,874 @@
+// license:BSD-3-Clause
+// copyright-holders:Juergen Buchmueller
+/*****************************************************************************
+ *
+ * Xerox AltoII display interface
+ *
+ *****************************************************************************/
+#include "alto2cpu.h"
+#include "a2roms.h"
+
+/**
+ * @brief PROM a38 contains the STOPWAKE' and MBEMBPTY' signals for the FIFO
+ * <PRE>
+ * The inputs to a38 are the UNLOAD counter RA[0-3] and the DDR<- counter
+ * WA[0-3], and the designer decided to reverse the address lines :-)
+ *
+ * a38 counter
+ * -------------
+ * A0 RA[0]
+ * A1 RA[1]
+ * A2 RA[2]
+ * A3 RA[3]
+ * A4 WA[0]
+ * A5 WA[1]
+ * A6 WA[2]
+ * A7 WA[3]
+ *
+ * Only two bits of a38 are used:
+ * O1 (002) = STOPWAKE'
+ * O3 (010) = MBEMPTY'
+ * </PRE>
+ */
+
+//! P3601 256x4 BPROM; display FIFO control: STOPWAKE, MBEMPTY
+static const prom_load_t pl_displ_a38 =
+{
+ "displ.a38",
+ 0,
+ "fd30beb7",
+ "65e4a19ba4ff748d525122128c514abedd55d866",
+ /* size */ 0400,
+ /* amap */ AMAP_REVERSE_0_7, // reverse address lines A0-A7
+ /* axor */ 0,
+ /* dxor */ 0,
+ /* width */ 4,
+ /* shift */ 0,
+ /* dmap */ DMAP_DEFAULT,
+ /* dand */ ZERO,
+ /* type */ sizeof(UINT8)
+};
+
+//! PROM a38 bit O1 is STOPWAKE' (stop DWT if bit is zero)
+#define FIFO_STOPWAKE(a38) (0 == (a38 & disp_a38_STOPWAKE) ? true : false)
+
+//! PROM a38 bit O3 is MBEMPTY' (FIFO is empty if bit is zero)
+#define FIFO_MBEMPTY(a38) (0 == (a38 & disp_a38_MBEMPTY) ? true : false)
+
+/**
+ * @brief emulation of PROM a63 in the display schematics page 8
+ * <PRE>
+ * The PROM's address lines are driven by a clock CLK, which is
+ * pixel clock / 24, and an inverted half-scanline signal H[1]'.
+ *
+ * It is 32x8 bits and its output bits (B) are connected to the
+ * signals, as well as its own address lines (A) through a latch
+ * of the type SN74774 like this:
+ *
+ * PROM 174 A others
+ * ------------------------
+ * B0 D5 - HBLANK
+ * B1 D0 - HSYNC
+ * B2 D4 A0 -
+ * B3 D1 A1 -
+ * B4 D3 A2 -
+ * B5 D2 A3 -
+ * B6 - - SCANEND
+ * B7 - - HLCGATE
+ * ------------------------
+ * H[1]' - A4 -
+ *
+ * The display_state_machine() is called at a rate of pixelclock/24.
+ *
+ * Decoded states of this PROM:
+ *
+ * STATE PROM binary HBLANK HSYNC NEXT SCANEND HLCGATE
+ * ----------------------------------------------------------
+ * 000 0007 00000111 1 1 001 0 0
+ * 001 0013 00001011 1 1 002 0 0
+ * 002 0015 00001101 1 0 003 0 0
+ * 003 0021 00010001 1 0 004 0 0
+ * 004 0024 00010100 0 0 005 0 0
+ * 005 0030 00011000 0 0 006 0 0
+ * 006 0034 00011100 0 0 007 0 0
+ * 007 0040 00100000 0 0 010 0 0
+ * 010 0044 00100100 0 0 011 0 0
+ * 011 0050 00101000 0 0 012 0 0
+ * 012 0054 00101100 0 0 013 0 0
+ * 013 0060 00110000 0 0 014 0 0
+ * 014 0064 00110100 0 0 015 0 0
+ * 015 0070 00111000 0 0 016 0 0
+ * 016 0074 00111100 0 0 017 0 0
+ * 017 0200 10000000 0 0 000 0 1
+ * 020 0004 00000100 0 0 001 0 0
+ * 021 0010 00001000 0 0 002 0 0
+ * 022 0014 00001100 0 0 003 0 0
+ * 023 0020 00010000 0 0 004 0 0
+ * 024 0024 00010100 0 0 005 0 0
+ * 025 0030 00011000 0 0 006 0 0
+ * 026 0034 00011100 0 0 007 0 0
+ * 027 0040 00100000 0 0 010 0 0
+ * 030 0044 00100100 0 0 011 0 0
+ * 031 0050 00101000 0 0 012 0 0
+ * 032 0054 00101100 0 0 013 0 0
+ * 033 0060 00110000 0 0 014 0 0
+ * 034 0064 00110100 0 0 015 0 0
+ * 035 0070 00111000 0 0 016 0 0
+ * 036 0175 01111101 1 0 017 1 0
+ * 037 0203 10000011 1 1 000 0 1
+ * </PRE>
+ */
+
+//! 82S23 32x8 BPROM; display HBLANK, HSYNC, SCANEND, HLCGATE ...
+static const prom_load_t pl_displ_a63 =
+{
+ "displ.a63",
+ 0,
+ "82a20d60",
+ "39d90703568be5419ada950e112d99227873fdea",
+ /* size */ 0040,
+ /* amap */ AMAP_DEFAULT,
+ /* axor */ 0,
+ /* dxor */ 0,
+ /* width */ 8,
+ /* shift */ 0,
+ /* dmap */ DMAP_DEFAULT,
+ /* dand */ ZERO,
+ /* type */ sizeof(UINT8)
+};
+
+//!< test the HBLANK (horizontal blanking) signal in PROM a63 being high
+#define A63_HBLANK(a) ((a & disp_a63_HBLANK) ? true : false)
+
+//!< test the HSYNC (horizontal synchonisation) signal in PROM a63 being high
+#define A63_HSYNC(a) ((a & disp_a63_HSYNC) ? true : false)
+
+//!< test the SCANEND (scanline end) signal in PROM a63 being high
+#define A63_SCANEND(a) ((a & disp_a63_SCANEND) ? true : false)
+
+//!< test the HLCGATE (horz. line counter gate) signal in PROM a63 being high
+#define A63_HLCGATE(a) ((a & disp_a63_HLCGATE) ? true : false)
+
+/**
+ * @brief PROM a66 is a 256x4 bit (type 3601)
+ * <PRE>
+ * Address lines are driven by H[1] to H[128] of the horz. line counters.
+ * PROM is enabled when H[256] and H[512] are both 0.
+ *
+ * Q1 is VSYNC for the odd field (with H1024=0)
+ * Q2 is VSYNC for the even field (with H1024=1)
+ * Q3 is VBLANK for the odd field (with H1024=0)
+ * Q4 is VBLANK for the even field (with H1024=1)
+ * </PRE>
+ */
+
+//! P3601 256x4 BPROM; display VSYNC and VBLANK
+static const prom_load_t pl_displ_a66 =
+{
+ "displ.a66",
+ 0,
+ "9f91aad9",
+ "69b1d4c71f4e18103112e8601850c2654e9265cf",
+ /* size */ 0400,
+ /* amap */ AMAP_DEFAULT,
+ /* axor */ 0,
+ /* dxor */ 0,
+ /* width */ 4,
+ /* shift */ 0,
+ /* dmap */ DMAP_DEFAULT,
+ /* dand */ ZERO,
+ /* type */ sizeof(UINT8)
+};
+
+//! test the VSYNC (vertical synchronisation) signal in PROM a66 being high
+#define A66_VSYNC(a) (a & (HLC1024 ? disp_a66_VSYNC_ODD : disp_a66_VSYNC_EVEN) ? false : true)
+
+//! test the VBLANK (vertical blanking) signal in PROM a66 being high
+#define A66_VBLANK(a) (a & (HLC1024 ? disp_a66_VBLANK_ODD : disp_a66_VBLANK_EVEN) ? false : true)
+
+/**
+ * @brief double the bits for a byte (left and right of display word) to a word
+ */
+static const UINT16 double_bits[256] = {
+ 0x0000,0x0003,0x000c,0x000f,0x0030,0x0033,0x003c,0x003f,
+ 0x00c0,0x00c3,0x00cc,0x00cf,0x00f0,0x00f3,0x00fc,0x00ff,
+ 0x0300,0x0303,0x030c,0x030f,0x0330,0x0333,0x033c,0x033f,
+ 0x03c0,0x03c3,0x03cc,0x03cf,0x03f0,0x03f3,0x03fc,0x03ff,
+ 0x0c00,0x0c03,0x0c0c,0x0c0f,0x0c30,0x0c33,0x0c3c,0x0c3f,
+ 0x0cc0,0x0cc3,0x0ccc,0x0ccf,0x0cf0,0x0cf3,0x0cfc,0x0cff,
+ 0x0f00,0x0f03,0x0f0c,0x0f0f,0x0f30,0x0f33,0x0f3c,0x0f3f,
+ 0x0fc0,0x0fc3,0x0fcc,0x0fcf,0x0ff0,0x0ff3,0x0ffc,0x0fff,
+ 0x3000,0x3003,0x300c,0x300f,0x3030,0x3033,0x303c,0x303f,
+ 0x30c0,0x30c3,0x30cc,0x30cf,0x30f0,0x30f3,0x30fc,0x30ff,
+ 0x3300,0x3303,0x330c,0x330f,0x3330,0x3333,0x333c,0x333f,
+ 0x33c0,0x33c3,0x33cc,0x33cf,0x33f0,0x33f3,0x33fc,0x33ff,
+ 0x3c00,0x3c03,0x3c0c,0x3c0f,0x3c30,0x3c33,0x3c3c,0x3c3f,
+ 0x3cc0,0x3cc3,0x3ccc,0x3ccf,0x3cf0,0x3cf3,0x3cfc,0x3cff,
+ 0x3f00,0x3f03,0x3f0c,0x3f0f,0x3f30,0x3f33,0x3f3c,0x3f3f,
+ 0x3fc0,0x3fc3,0x3fcc,0x3fcf,0x3ff0,0x3ff3,0x3ffc,0x3fff,
+ 0xc000,0xc003,0xc00c,0xc00f,0xc030,0xc033,0xc03c,0xc03f,
+ 0xc0c0,0xc0c3,0xc0cc,0xc0cf,0xc0f0,0xc0f3,0xc0fc,0xc0ff,
+ 0xc300,0xc303,0xc30c,0xc30f,0xc330,0xc333,0xc33c,0xc33f,
+ 0xc3c0,0xc3c3,0xc3cc,0xc3cf,0xc3f0,0xc3f3,0xc3fc,0xc3ff,
+ 0xcc00,0xcc03,0xcc0c,0xcc0f,0xcc30,0xcc33,0xcc3c,0xcc3f,
+ 0xccc0,0xccc3,0xcccc,0xcccf,0xccf0,0xccf3,0xccfc,0xccff,
+ 0xcf00,0xcf03,0xcf0c,0xcf0f,0xcf30,0xcf33,0xcf3c,0xcf3f,
+ 0xcfc0,0xcfc3,0xcfcc,0xcfcf,0xcff0,0xcff3,0xcffc,0xcfff,
+ 0xf000,0xf003,0xf00c,0xf00f,0xf030,0xf033,0xf03c,0xf03f,
+ 0xf0c0,0xf0c3,0xf0cc,0xf0cf,0xf0f0,0xf0f3,0xf0fc,0xf0ff,
+ 0xf300,0xf303,0xf30c,0xf30f,0xf330,0xf333,0xf33c,0xf33f,
+ 0xf3c0,0xf3c3,0xf3cc,0xf3cf,0xf3f0,0xf3f3,0xf3fc,0xf3ff,
+ 0xfc00,0xfc03,0xfc0c,0xfc0f,0xfc30,0xfc33,0xfc3c,0xfc3f,
+ 0xfcc0,0xfcc3,0xfccc,0xfccf,0xfcf0,0xfcf3,0xfcfc,0xfcff,
+ 0xff00,0xff03,0xff0c,0xff0f,0xff30,0xff33,0xff3c,0xff3f,
+ 0xffc0,0xffc3,0xffcc,0xffcf,0xfff0,0xfff3,0xfffc,0xffff
+};
+
+#define HLC1 ((m_dsp.hlc >> 0) & 1) //!< horizontal line counter bit 0 (mid of the scanline)
+#define HLC2 ((m_dsp.hlc >> 1) & 1) //!< horizontal line counter bit 1
+#define HLC4 ((m_dsp.hlc >> 2) & 1) //!< horizontal line counter bit 2
+#define HLC8 ((m_dsp.hlc >> 3) & 1) //!< horizontal line counter bit 3
+#define HLC16 ((m_dsp.hlc >> 4) & 1) //!< horizontal line counter bit 4
+#define HLC32 ((m_dsp.hlc >> 5) & 1) //!< horizontal line counter bit 5
+#define HLC64 ((m_dsp.hlc >> 6) & 1) //!< horizontal line counter bit 6
+#define HLC128 ((m_dsp.hlc >> 7) & 1) //!< horizontal line counter bit 7
+#define HLC256 ((m_dsp.hlc >> 8) & 1) //!< horizontal line counter bit 8
+#define HLC512 ((m_dsp.hlc >> 9) & 1) //!< horizontal line counter bit 9
+#define HLC1024 ((m_dsp.hlc >> 10) & 1) //!< horizontal line counter bit 10 (odd/even field)
+
+#define GET_SETMODE_SPEEDY(mode) X_RDBITS(mode,16,0,0) //!< get the pixel clock speed from a SETMODE<- bus value
+#define GET_SETMODE_INVERSE(mode) X_RDBITS(mode,16,1,1) //!< get the inverse video flag from a SETMODE<- bus value
+
+//!< helper to extract A3-A0 from a PROM a63 value
+#define A63_NEXT(n) ((n >> 2) & 017)
+
+//! update the internal bitmap to a byte array
+void alto2_cpu_device::update_bitmap_word(UINT16* bitmap, int x, int y, UINT16 word)
+{
+ // mixing with the cursor
+ if (x == m_dsp.curxpos + 0)
+ word ^= m_dsp.cursor0;
+ if (x == m_dsp.curxpos + 1)
+ word ^= m_dsp.cursor1;
+ // no change?
+ if (word == bitmap[x])
+ return;
+ bitmap[x] = word;
+ UINT8* pix = m_dsp.scanline[y] + x * 16;
+ *pix++ = (word >> 15) & 1;
+ *pix++ = (word >> 14) & 1;
+ *pix++ = (word >> 13) & 1;
+ *pix++ = (word >> 12) & 1;
+ *pix++ = (word >> 11) & 1;
+ *pix++ = (word >> 10) & 1;
+ *pix++ = (word >> 9) & 1;
+ *pix++ = (word >> 8) & 1;
+ *pix++ = (word >> 7) & 1;
+ *pix++ = (word >> 6) & 1;
+ *pix++ = (word >> 5) & 1;
+ *pix++ = (word >> 4) & 1;
+ *pix++ = (word >> 3) & 1;
+ *pix++ = (word >> 2) & 1;
+ *pix++ = (word >> 1) & 1;
+ *pix++ = (word >> 0) & 1;
+}
+
+/**
+ * @brief unload the next word from the display FIFO and shift it to the screen
+ */
+void alto2_cpu_device::unload_word()
+{
+ int x = m_unload_word;
+ int y = ((m_dsp.hlc - m_dsp.vblank) & ~02001) ^ HLC1024;
+
+ if (y < 0 || y >= ALTO2_DISPLAY_HEIGHT || x >= ALTO2_DISPLAY_VISIBLE_WORDS)
+ {
+ m_unload_time = -1;
+ return;
+ }
+ UINT16* bitmap = m_dsp.raw_bitmap + y * ALTO2_DISPLAY_SCANLINE_WORDS;
+ UINT16 word = m_dsp.inverse;
+ UINT8 a38 = m_disp_a38[m_dsp.ra * 16 + m_dsp.wa];
+ if (FIFO_MBEMPTY(a38))
+ {
+ LOG((LOG_DISPL,1, " DSP FIFO underrun y:%d x:%d\n", y, x));
+ }
+ else
+ {
+ word ^= m_dsp.fifo[m_dsp.ra];
+ m_dsp.ra = (m_dsp.ra + 1) % ALTO2_DISPLAY_FIFO;
+ LOG((LOG_DISPL,3, " DSP pull %04x from FIFO[%02o] y:%d x:%d\n",
+ word, (m_dsp.ra - 1) & (ALTO2_DISPLAY_FIFO - 1), y, x));
+ }
+
+ if (m_dsp.halfclock)
+ {
+ UINT16 word1 = double_bits[word / 256];
+ UINT16 word2 = double_bits[word % 256];
+ update_bitmap_word(bitmap, x, y, word1);
+ x++;
+ if (x < ALTO2_DISPLAY_VISIBLE_WORDS)
+ {
+ update_bitmap_word(bitmap, x, y, word2);
+ x++;
+ }
+ m_unload_time += ALTO2_DISPLAY_BITTIME(32);
+ }
+ else
+ {
+ update_bitmap_word(bitmap, x, y, word);
+ x++;
+ m_unload_time += ALTO2_DISPLAY_BITTIME(16);
+ }
+ if (x < ALTO2_DISPLAY_VISIBLE_WORDS)
+ m_unload_word = x;
+ else
+ m_unload_time = -1;
+}
+
+
+/**
+ * @brief function called by the CPU to enter the next display state
+ *
+ * There are 32 states per scanline and 875 scanlines per frame.
+ */
+void alto2_cpu_device::display_state_machine()
+{
+ LOG((LOG_DISPL,5,"DSP%03o:", m_dsp.state));
+ if (020 == m_dsp.state)
+ {
+ LOG((LOG_DISPL,2," HLC=%d", m_dsp.hlc));
+ }
+
+ UINT8 a63 = m_disp_a63[m_dsp.state];
+ if (A63_HLCGATE(a63))
+ {
+ // count horizontal line counters and wrap
+ m_dsp.hlc += 1;
+ if (m_dsp.hlc > ALTO2_DISPLAY_HLC_END)
+ m_dsp.hlc = ALTO2_DISPLAY_HLC_START;
+ // wake up the memory refresh task _twice_ on each scanline
+ m_task_wakeup |= 1 << task_mrt;
+ }
+ // PROM a66 is disabled, if any of HLC256 or HLC512 are high
+ UINT8 a66 = (HLC256 || HLC512) ? 017 : m_disp_a66[m_dsp.hlc & 0377];
+
+ // next address from PROM a63, use A4 from HLC1
+ UINT8 next = ((HLC1 ^ 1) << 4) | A63_NEXT(a63);
+
+ if (A66_VBLANK(a66))
+ {
+ // Rising edge of VBLANK: remember HLC[1-10] where the VBLANK starts
+ m_dsp.vblank = m_dsp.hlc & ~02000;
+
+ LOG((LOG_DISPL,1, " VBLANK"));
+
+ // VSYNC is always within VBLANK, thus we handle it only here
+ if (A66_VSYNC(a66))
+ {
+ if (!A66_VSYNC(m_dsp.a66))
+ {
+ LOG((LOG_DISPL,1, " VSYNC/ (wake DVT)"));
+ /*
+ * The display vertical task DVT is woken once per field
+ * at the beginning of vertical retrace.
+ */
+ m_task_wakeup |= 1 << task_dvt;
+ // TODO: upade odd or even field of the internal bitmap now?
+ }
+ }
+ }
+ else
+ {
+ // Falling edge of VBLANK?
+ if (A66_VBLANK(m_dsp.a66))
+ {
+ /*
+ * VBLANKPULSE:
+ * The display horizontal task DHT is woken once at the
+ * beginning of each field, and thereafter whenever the
+ * display word task blocks.
+ *
+ * The DHT can block itself, in which case neither it nor
+ * the word task can be woken until the start of the
+ * next field.
+ */
+ LOG((LOG_DISPL,1, " VBLANKPULSE (wake DHT)"));
+ m_dsp.dht_blocks = false;
+ m_dsp.dwt_blocks = false;
+ m_task_wakeup |= 1 << task_dht;
+ /*
+ * VBLANKPULSE also resets the cursor task block flip flop,
+ * which is built from two NAND gates a40c and a40d (74H01).
+ */
+ m_dsp.curt_blocks = false;
+ }
+ if (!A63_HBLANK(a63) && A63_HBLANK(m_dsp.a63))
+ {
+ // Falling edge of a63 HBLANK starts unloading of FIFO words
+ LOG((LOG_DISPL,1, " HBLANK\\ UNLOAD"));
+ m_unload_time = ALTO2_DISPLAY_BITTIME(m_dsp.halfclock ? 32 : 16);
+ m_unload_word = 0;
+ }
+ }
+
+ /*
+ * The wakeup request for the display word task (DWT) is controlled by
+ * the state of the 16 word FIFO. If DWT has not executed a BLOCK,
+ * if DHT is not blocked, and if the buffer is not full, DWT wakeups
+ * are generated.
+ */
+ UINT8 a38 = m_disp_a38[m_dsp.ra * 16 + m_dsp.wa];
+ if (!m_dsp.dwt_blocks && !m_dsp.dht_blocks && !FIFO_STOPWAKE(a38))
+ {
+ m_task_wakeup |= 1 << task_dwt;
+ LOG((LOG_DISPL,1, " (wake DWT)"));
+ }
+
+ // Stop waking up the DWT when SCANEND is active
+ if (A63_SCANEND(a63))
+ {
+ m_task_wakeup &= ~(1 << task_dwt);
+ LOG((LOG_DISPL,1, " SCANEND"));
+ }
+
+ LOG((LOG_DISPL,1, "%s", A63_HBLANK(a63) ? " HBLANK": ""));
+
+ if (A63_HSYNC(a63))
+ {
+ // Active HSYNC
+ if (!A63_HSYNC(m_dsp.a63))
+ {
+ // Rising edge of HSYNC => CLRBUF
+ LOG((LOG_DISPL,1, " HSYNC/ (CLRBUF)"));
+ /*
+ * The hardware sets the buffer empty and clears the DWT block
+ * flip-flop at the beginning of horizontal retrace for
+ * every scanline.
+ */
+ m_dsp.wa = 0;
+ m_dsp.ra = 0;
+ m_dsp.dwt_blocks = false;
+ // now take the new values from the last SETMODE<-
+ m_dsp.inverse = GET_SETMODE_INVERSE(m_dsp.setmode) ? 0xffff : 0x0000;
+ m_dsp.halfclock = GET_SETMODE_SPEEDY(m_dsp.setmode) ? true : false;
+ // stop the CPU execution loop from calling unload_word()
+ m_unload_time = -1;
+ }
+ else
+ {
+ LOG((LOG_DISPL,1, " HSYNC"));
+ }
+ }
+ else
+ // Falling edge of HSYNC?
+ if (A63_HSYNC(m_dsp.a63))
+ {
+ /*
+ * CLRBUF' also resets the 2nd cursor task block flip flop,
+ * which is built from two NAND gates a30c and a30d (74H00).
+ * If both flip flops are reset, the NOR gate a20d (74S02)
+ * decodes this as WAKECURT signal.
+ */
+ m_dsp.curt_wakeup = true;
+ if (!m_dsp.curt_blocks)
+ m_task_wakeup |= 1 << task_curt;
+ }
+
+ LOG((LOG_DISPL,1, " NEXT:%03o\n", next));
+
+ m_dsp.a63 = a63;
+ m_dsp.a66 = a66;
+ m_dsp.state = next;
+ m_dsp_time += ALTO2_DISPLAY_BITTIME(32);
+}
+
+/**
+ * @brief branch on evenfield
+ *
+ * NEXT(09) = even field ? 1 : 0
+ */
+void alto2_cpu_device::f2_late_evenfield()
+{
+ UINT16 r = HLC1024 ^ 1;
+ LOG((LOG_DISPL,2," EVENFIELD branch (%#o | %#o)\n", m_next2, r));
+ m_next2 |= r;
+}
+
+/**
+ * @brief initialize the display context to useful values
+ *
+ * Zap the display context to all 0s.
+ * Allocate a bitmap array to save blitting to the screen when
+ * there is no change in the data words.
+ */
+void alto2_cpu_device::init_disp()
+{
+ memset(&m_dsp, 0, sizeof(m_dsp));
+ save_item(NAME(m_dsp.state));
+ save_item(NAME(m_dsp.hlc));
+ save_item(NAME(m_dsp.setmode));
+ save_item(NAME(m_dsp.inverse));
+ save_item(NAME(m_dsp.halfclock));
+ save_item(NAME(m_dsp.fifo));
+ save_item(NAME(m_dsp.wa));
+ save_item(NAME(m_dsp.ra));
+ save_item(NAME(m_dsp.a63));
+ save_item(NAME(m_dsp.a66));
+ save_item(NAME(m_dsp.dht_blocks));
+ save_item(NAME(m_dsp.dwt_blocks));
+ save_item(NAME(m_dsp.curt_blocks));
+ save_item(NAME(m_dsp.curt_wakeup));
+ save_item(NAME(m_dsp.vblank));
+ save_item(NAME(m_dsp.xpreg));
+ save_item(NAME(m_dsp.csr));
+ save_item(NAME(m_dsp.curxpos));
+ save_item(NAME(m_dsp.cursor0));
+ save_item(NAME(m_dsp.cursor1));
+
+ m_disp_a38 = prom_load(machine(), &pl_displ_a38, memregion("displ_a38")->base());
+ m_disp_a63 = prom_load(machine(), &pl_displ_a63, memregion("displ_a63")->base());
+ m_disp_a66 = prom_load(machine(), &pl_displ_a66, memregion("displ_a66")->base());
+
+ m_dsp.hlc = ALTO2_DISPLAY_HLC_START;
+
+ m_dsp.raw_bitmap = auto_alloc_array(machine(), UINT16, ALTO2_DISPLAY_HEIGHT * ALTO2_DISPLAY_SCANLINE_WORDS);
+ m_dsp.scanline = auto_alloc_array(machine(), UINT8*, ALTO2_DISPLAY_HEIGHT + ALTO2_FAKE_STATUS_H);
+ for (int y = 0; y < ALTO2_DISPLAY_HEIGHT + ALTO2_FAKE_STATUS_H; y++)
+ m_dsp.scanline[y] = auto_alloc_array(machine(), UINT8, ALTO2_DISPLAY_TOTAL_WIDTH);
+
+ m_dsp.bitmap = auto_bitmap_ind16_alloc(machine(), ALTO2_DISPLAY_WIDTH, ALTO2_DISPLAY_HEIGHT + ALTO2_FAKE_STATUS_H);
+ m_dsp.state = 0;
+}
+
+void alto2_cpu_device::exit_disp()
+{
+ // nothing to do yet
+}
+
+void alto2_cpu_device::reset_disp()
+{
+ m_dsp.state = 0;
+ m_dsp.hlc = ALTO2_DISPLAY_HLC_START;
+ m_dsp.a63 = 0;
+ m_dsp.a66 = 0;
+ m_dsp.setmode = 0;
+ m_dsp.inverse = 0;
+ m_dsp.halfclock = false;
+ m_dsp.wa = 0;
+ m_dsp.ra = 0;
+ m_dsp.dht_blocks = false;
+ m_dsp.dwt_blocks = false;
+ m_dsp.curt_blocks = false;
+ m_dsp.curt_wakeup = false;
+ m_dsp.vblank = 0;
+ m_dsp.xpreg = 0;
+ m_dsp.csr = 0;
+ m_dsp.curxpos = 0;
+ m_dsp.cursor0 = 0;
+ m_dsp.cursor1 = 0;
+ memset(m_dsp.raw_bitmap, 0, sizeof(UINT16) * ALTO2_DISPLAY_HEIGHT * ALTO2_DISPLAY_SCANLINE_WORDS);
+ for (int y = 0; y < ALTO2_DISPLAY_HEIGHT; y++)
+ memset(m_dsp.scanline[y], 0, sizeof(UINT8) * ALTO2_DISPLAY_TOTAL_WIDTH);
+ m_dsp.odd_frame = false;
+
+ for (int y = ALTO2_DISPLAY_HEIGHT; y < ALTO2_DISPLAY_HEIGHT + ALTO2_FAKE_STATUS_H; y++)
+ memset(m_dsp.scanline[y], 1, sizeof(UINT8) * ALTO2_DISPLAY_TOTAL_WIDTH);
+ fake_status_printf(1, "* Fake Status *");
+}
+
+/* Video update */
+UINT32 alto2_cpu_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ pen_t palette_bw[2];
+ palette_bw[0] = screen.palette()->white_pen();
+ palette_bw[1] = screen.palette()->black_pen();
+ // copy even or odd field
+ for (int y = m_dsp.odd_frame ? 0 : 1; y < ALTO2_DISPLAY_HEIGHT; y += 2)
+ draw_scanline8(*m_dsp.bitmap, 0, y, ALTO2_DISPLAY_WIDTH, m_dsp.scanline[y], palette_bw);
+ // copy fake status scanlines
+ for (int y = ALTO2_DISPLAY_HEIGHT; y < ALTO2_DISPLAY_HEIGHT + ALTO2_FAKE_STATUS_H; y++)
+ draw_scanline8(*m_dsp.bitmap, 0, y, ALTO2_DISPLAY_WIDTH, m_dsp.scanline[y], palette_bw);
+ // copy bitmap
+ copybitmap(bitmap, *m_dsp.bitmap, 0, 0, 0, 0, cliprect);
+ return 0;
+}
+
+void alto2_cpu_device::screen_eof(screen_device &screen, bool state)
+{
+ if (state)
+ m_dsp.odd_frame = !m_dsp.odd_frame;
+}
+
+/*****************************************************************************
+ *
+ * FAKE STATUS LINE
+ *
+ *****************************************************************************/
+
+typedef struct {
+ UINT8 code;
+ UINT8 bits[10];
+} bdf_6x10_t;
+
+/**
+ * STARTFONT 2.1
+ * COMMENT "$ucs-fonts: 6x10.bdf,v 1.34 2002-11-10 19:12:30+00 mgk25 Rel $"
+ * COMMENT "Send bug reports to Markus Kuhn <http://www.cl.cam.ac.uk/~mgk25/>"
+ * FONT -Misc-Fixed-Medium-R-Normal--10-100-75-75-C-60-ISO10646-1
+ * SIZE 10 75 75
+ * FONTBOUNDINGBOX 6 10 0 -2
+ * STARTPROPERTIES 22
+ * FONTNAME_REGISTRY ""
+ * FOUNDRY "Misc"
+ * FAMILY_NAME "Fixed"
+ * WEIGHT_NAME "Medium"
+ * SLANT "R"
+ * SETWIDTH_NAME "Normal"
+ * ADD_STYLE_NAME ""
+ * PIXEL_SIZE 10
+ * POINT_SIZE 100
+ * RESOLUTION_X 75
+ * RESOLUTION_Y 75
+ * SPACING "C"
+ * AVERAGE_WIDTH 60
+ * CHARSET_REGISTRY "ISO10646"
+ * CHARSET_ENCODING "1"
+ * FONT_ASCENT 8
+ * FONT_DESCENT 2
+ * DEFAULT_CHAR 0
+ * COPYRIGHT "Public domain terminal emulator font. Share and enjoy."
+ * _XMBDFED_INFO "Edited with xmbdfed 4.5."
+ * CAP_HEIGHT 7
+ * X_HEIGHT 5
+ * ENDPROPERTIES
+ * CHARS 1597
+ */
+static const bdf_6x10_t bdf_6x10[] = {
+/* space */ { 32, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* exclam */ { 33, {0x00, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x20, 0x00, 0x00 }},
+/* quotedbl */ { 34, {0x00, 0x50, 0x50, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* numbersign */ { 35, {0x00, 0x50, 0x50, 0xF8, 0x50, 0xF8, 0x50, 0x50, 0x00, 0x00 }},
+/* dollar */ { 36, {0x00, 0x20, 0x70, 0xA0, 0x70, 0x28, 0x70, 0x20, 0x00, 0x00 }},
+/* percent */ { 37, {0x00, 0x48, 0xA8, 0x50, 0x20, 0x50, 0xA8, 0x90, 0x00, 0x00 }},
+/* ampersand */ { 38, {0x00, 0x40, 0xA0, 0xA0, 0x40, 0xA8, 0x90, 0x68, 0x00, 0x00 }},
+/* quotesingle */ { 39, {0x00, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* parenleft */ { 40, {0x00, 0x10, 0x20, 0x40, 0x40, 0x40, 0x20, 0x10, 0x00, 0x00 }},
+/* parenright */ { 41, {0x00, 0x40, 0x20, 0x10, 0x10, 0x10, 0x20, 0x40, 0x00, 0x00 }},
+/* asterisk */ { 42, {0x00, 0x00, 0x88, 0x50, 0xF8, 0x50, 0x88, 0x00, 0x00, 0x00 }},
+/* plus */ { 43, {0x00, 0x00, 0x20, 0x20, 0xF8, 0x20, 0x20, 0x00, 0x00, 0x00 }},
+/* comma */ { 44, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x20, 0x40, 0x00 }},
+/* hyphen */ { 45, {0x00, 0x00, 0x00, 0x00, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* period */ { 46, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x70, 0x20, 0x00 }},
+/* slash */ { 47, {0x00, 0x08, 0x08, 0x10, 0x20, 0x40, 0x80, 0x80, 0x00, 0x00 }},
+/* zero */ { 48, {0x00, 0x20, 0x50, 0x88, 0x88, 0x88, 0x50, 0x20, 0x00, 0x00 }},
+/* one */ { 49, {0x00, 0x20, 0x60, 0xA0, 0x20, 0x20, 0x20, 0xF8, 0x00, 0x00 }},
+/* two */ { 50, {0x00, 0x70, 0x88, 0x08, 0x30, 0x40, 0x80, 0xF8, 0x00, 0x00 }},
+/* three */ { 51, {0x00, 0xF8, 0x08, 0x10, 0x30, 0x08, 0x88, 0x70, 0x00, 0x00 }},
+/* four */ { 52, {0x00, 0x10, 0x30, 0x50, 0x90, 0xF8, 0x10, 0x10, 0x00, 0x00 }},
+/* five */ { 53, {0x00, 0xF8, 0x80, 0xB0, 0xC8, 0x08, 0x88, 0x70, 0x00, 0x00 }},
+/* six */ { 54, {0x00, 0x30, 0x40, 0x80, 0xB0, 0xC8, 0x88, 0x70, 0x00, 0x00 }},
+/* seven */ { 55, {0x00, 0xF8, 0x08, 0x10, 0x10, 0x20, 0x40, 0x40, 0x00, 0x00 }},
+/* eight */ { 56, {0x00, 0x70, 0x88, 0x88, 0x70, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* nine */ { 57, {0x00, 0x70, 0x88, 0x98, 0x68, 0x08, 0x10, 0x60, 0x00, 0x00 }},
+/* colon */ { 58, {0x00, 0x00, 0x20, 0x70, 0x20, 0x00, 0x20, 0x70, 0x20, 0x00 }},
+/* semicolon */ { 59, {0x00, 0x00, 0x20, 0x70, 0x20, 0x00, 0x30, 0x20, 0x40, 0x00 }},
+/* less */ { 60, {0x00, 0x08, 0x10, 0x20, 0x40, 0x20, 0x10, 0x08, 0x00, 0x00 }},
+/* equal */ { 61, {0x00, 0x00, 0x00, 0xF8, 0x00, 0xF8, 0x00, 0x00, 0x00, 0x00 }},
+/* greater */ { 62, {0x00, 0x40, 0x20, 0x10, 0x08, 0x10, 0x20, 0x40, 0x00, 0x00 }},
+/* question */ { 63, {0x00, 0x70, 0x88, 0x10, 0x20, 0x20, 0x00, 0x20, 0x00, 0x00 }},
+/* at */ { 64, {0x00, 0x70, 0x88, 0x98, 0xA8, 0xB0, 0x80, 0x70, 0x00, 0x00 }},
+/* A */ { 65, {0x00, 0x20, 0x50, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* B */ { 66, {0x00, 0xF0, 0x48, 0x48, 0x70, 0x48, 0x48, 0xF0, 0x00, 0x00 }},
+/* C */ { 67, {0x00, 0x70, 0x88, 0x80, 0x80, 0x80, 0x88, 0x70, 0x00, 0x00 }},
+/* D */ { 68, {0x00, 0xF0, 0x48, 0x48, 0x48, 0x48, 0x48, 0xF0, 0x00, 0x00 }},
+/* E */ { 69, {0x00, 0xF8, 0x80, 0x80, 0xF0, 0x80, 0x80, 0xF8, 0x00, 0x00 }},
+/* F */ { 70, {0x00, 0xF8, 0x80, 0x80, 0xF0, 0x80, 0x80, 0x80, 0x00, 0x00 }},
+/* G */ { 71, {0x00, 0x70, 0x88, 0x80, 0x80, 0x98, 0x88, 0x70, 0x00, 0x00 }},
+/* H */ { 72, {0x00, 0x88, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x88, 0x00, 0x00 }},
+/* I */ { 73, {0x00, 0x70, 0x20, 0x20, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* J */ { 74, {0x00, 0x38, 0x10, 0x10, 0x10, 0x10, 0x90, 0x60, 0x00, 0x00 }},
+/* K */ { 75, {0x00, 0x88, 0x90, 0xA0, 0xC0, 0xA0, 0x90, 0x88, 0x00, 0x00 }},
+/* L */ { 76, {0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xF8, 0x00, 0x00 }},
+/* M */ { 77, {0x00, 0x88, 0x88, 0xD8, 0xA8, 0x88, 0x88, 0x88, 0x00, 0x00 }},
+/* N */ { 78, {0x00, 0x88, 0x88, 0xC8, 0xA8, 0x98, 0x88, 0x88, 0x00, 0x00 }},
+/* O */ { 79, {0x00, 0x70, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* P */ { 80, {0x00, 0xF0, 0x88, 0x88, 0xF0, 0x80, 0x80, 0x80, 0x00, 0x00 }},
+/* Q */ { 81, {0x00, 0x70, 0x88, 0x88, 0x88, 0x88, 0xA8, 0x70, 0x08, 0x00 }},
+/* R */ { 82, {0x00, 0xF0, 0x88, 0x88, 0xF0, 0xA0, 0x90, 0x88, 0x00, 0x00 }},
+/* S */ { 83, {0x00, 0x70, 0x88, 0x80, 0x70, 0x08, 0x88, 0x70, 0x00, 0x00 }},
+/* T */ { 84, {0x00, 0xF8, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00 }},
+/* U */ { 85, {0x00, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* V */ { 86, {0x00, 0x88, 0x88, 0x88, 0x50, 0x50, 0x50, 0x20, 0x00, 0x00 }},
+/* W */ { 87, {0x00, 0x88, 0x88, 0x88, 0xA8, 0xA8, 0xD8, 0x88, 0x00, 0x00 }},
+/* X */ { 88, {0x00, 0x88, 0x88, 0x50, 0x20, 0x50, 0x88, 0x88, 0x00, 0x00 }},
+/* Y */ { 89, {0x00, 0x88, 0x88, 0x50, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00 }},
+/* Z */ { 90, {0x00, 0xF8, 0x08, 0x10, 0x20, 0x40, 0x80, 0xF8, 0x00, 0x00 }},
+/* bracketleft */ { 91, {0x00, 0x70, 0x40, 0x40, 0x40, 0x40, 0x40, 0x70, 0x00, 0x00 }},
+/* backslash */ { 92, {0x00, 0x80, 0x80, 0x40, 0x20, 0x10, 0x08, 0x08, 0x00, 0x00 }},
+/* bracketright */ { 93, {0x00, 0x70, 0x10, 0x10, 0x10, 0x10, 0x10, 0x70, 0x00, 0x00 }},
+/* asciicircum */ { 94, {0x00, 0x20, 0x50, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* underscore */ { 95, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x00 }},
+/* grave */ { 96, {0x20, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* a */ { 97, {0x00, 0x00, 0x00, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* b */ { 98, {0x00, 0x80, 0x80, 0xB0, 0xC8, 0x88, 0xC8, 0xB0, 0x00, 0x00 }},
+/* c */ { 99, {0x00, 0x00, 0x00, 0x70, 0x88, 0x80, 0x88, 0x70, 0x00, 0x00 }},
+/* d */ { 100, {0x00, 0x08, 0x08, 0x68, 0x98, 0x88, 0x98, 0x68, 0x00, 0x00 }},
+/* e */ { 101, {0x00, 0x00, 0x00, 0x70, 0x88, 0xF8, 0x80, 0x70, 0x00, 0x00 }},
+/* f */ { 102, {0x00, 0x30, 0x48, 0x40, 0xF0, 0x40, 0x40, 0x40, 0x00, 0x00 }},
+/* g */ { 103, {0x00, 0x00, 0x00, 0x78, 0x88, 0x88, 0x78, 0x08, 0x88, 0x70 }},
+/* h */ { 104, {0x00, 0x80, 0x80, 0xB0, 0xC8, 0x88, 0x88, 0x88, 0x00, 0x00 }},
+/* i */ { 105, {0x00, 0x20, 0x00, 0x60, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* j */ { 106, {0x00, 0x08, 0x00, 0x18, 0x08, 0x08, 0x08, 0x48, 0x48, 0x30 }},
+/* k */ { 107, {0x00, 0x80, 0x80, 0x88, 0x90, 0xE0, 0x90, 0x88, 0x00, 0x00 }},
+/* l */ { 108, {0x00, 0x60, 0x20, 0x20, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* m */ { 109, {0x00, 0x00, 0x00, 0xD0, 0xA8, 0xA8, 0xA8, 0x88, 0x00, 0x00 }},
+/* n */ { 110, {0x00, 0x00, 0x00, 0xB0, 0xC8, 0x88, 0x88, 0x88, 0x00, 0x00 }},
+/* o */ { 111, {0x00, 0x00, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* p */ { 112, {0x00, 0x00, 0x00, 0xB0, 0xC8, 0x88, 0xC8, 0xB0, 0x80, 0x80 }},
+/* q */ { 113, {0x00, 0x00, 0x00, 0x68, 0x98, 0x88, 0x98, 0x68, 0x08, 0x08 }},
+/* r */ { 114, {0x00, 0x00, 0x00, 0xB0, 0xC8, 0x80, 0x80, 0x80, 0x00, 0x00 }},
+/* s */ { 115, {0x00, 0x00, 0x00, 0x70, 0x80, 0x70, 0x08, 0xF0, 0x00, 0x00 }},
+/* t */ { 116, {0x00, 0x40, 0x40, 0xF0, 0x40, 0x40, 0x48, 0x30, 0x00, 0x00 }},
+/* u */ { 117, {0x00, 0x00, 0x00, 0x88, 0x88, 0x88, 0x98, 0x68, 0x00, 0x00 }},
+/* v */ { 118, {0x00, 0x00, 0x00, 0x88, 0x88, 0x50, 0x50, 0x20, 0x00, 0x00 }},
+/* w */ { 119, {0x00, 0x00, 0x00, 0x88, 0x88, 0xA8, 0xA8, 0x50, 0x00, 0x00 }},
+/* x */ { 120, {0x00, 0x00, 0x00, 0x88, 0x50, 0x20, 0x50, 0x88, 0x00, 0x00 }},
+/* y */ { 121, {0x00, 0x00, 0x00, 0x88, 0x88, 0x98, 0x68, 0x08, 0x88, 0x70 }},
+/* z */ { 122, {0x00, 0x00, 0x00, 0xF8, 0x10, 0x20, 0x40, 0xF8, 0x00, 0x00 }},
+/* braceleft */ { 123, {0x00, 0x18, 0x20, 0x10, 0x60, 0x10, 0x20, 0x18, 0x00, 0x00 }},
+/* bar */ { 124, {0x00, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00 }},
+/* braceright */ { 125, {0x00, 0x60, 0x10, 0x20, 0x18, 0x20, 0x10, 0x60, 0x00, 0x00 }},
+/* asciitilde */ { 126, {0x00, 0x48, 0xA8, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* space */ { 160, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* exclamdown */ { 161, {0x00, 0x20, 0x00, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00 }},
+/* cent */ { 162, {0x00, 0x00, 0x20, 0x78, 0xA0, 0xA0, 0xA0, 0x78, 0x20, 0x00 }},
+/* sterling */ { 163, {0x00, 0x30, 0x48, 0x40, 0xE0, 0x40, 0x48, 0xB0, 0x00, 0x00 }},
+/* currency */ { 164, {0x00, 0x00, 0x00, 0x88, 0x70, 0x50, 0x70, 0x88, 0x00, 0x00 }},
+/* yen */ { 165, {0x00, 0x88, 0x88, 0x50, 0x20, 0xF8, 0x20, 0x20, 0x20, 0x00 }},
+/* brokenbar */ { 166, {0x00, 0x20, 0x20, 0x20, 0x00, 0x20, 0x20, 0x20, 0x00, 0x00 }},
+/* section */ { 167, {0x00, 0x70, 0x80, 0xE0, 0x90, 0x48, 0x38, 0x08, 0x70, 0x00 }},
+/* dieresis */ { 168, {0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* copyright */ { 169, {0x00, 0x70, 0x88, 0xA8, 0xC8, 0xA8, 0x88, 0x70, 0x00, 0x00 }},
+/* ordfeminine */ { 170, {0x00, 0x38, 0x48, 0x58, 0x28, 0x00, 0x78, 0x00, 0x00, 0x00 }},
+/* guillemotleft */ { 171, {0x00, 0x00, 0x00, 0x24, 0x48, 0x90, 0x48, 0x24, 0x00, 0x00 }},
+/* logicalnot */ { 172, {0x00, 0x00, 0x00, 0x00, 0x78, 0x08, 0x00, 0x00, 0x00, 0x00 }},
+/* hyphen */ { 173, {0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* registered */ { 174, {0x00, 0x70, 0x88, 0xE8, 0xC8, 0xC8, 0x88, 0x70, 0x00, 0x00 }},
+/* macron */ { 175, {0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* degree */ { 176, {0x00, 0x20, 0x50, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* plusminus */ { 177, {0x00, 0x00, 0x20, 0x20, 0xF8, 0x20, 0x20, 0xF8, 0x00, 0x00 }},
+/* twosuperior */ { 178, {0x30, 0x48, 0x10, 0x20, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* threesuperior */ { 179, {0x70, 0x08, 0x30, 0x08, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* acute */ { 180, {0x10, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* mu */ { 181, {0x00, 0x00, 0x00, 0x88, 0x88, 0x88, 0xC8, 0xB0, 0x80, 0x00 }},
+/* paragraph */ { 182, {0x00, 0x78, 0xE8, 0xE8, 0x68, 0x28, 0x28, 0x28, 0x00, 0x00 }},
+/* periodcentered */ { 183, {0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* cedilla */ { 184, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x20 }},
+/* onesuperior */ { 185, {0x20, 0x60, 0x20, 0x20, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00 }},
+/* ordmasculine */ { 186, {0x00, 0x30, 0x48, 0x48, 0x30, 0x00, 0x78, 0x00, 0x00, 0x00 }},
+/* guillemotright */ { 187, {0x00, 0x00, 0x00, 0x90, 0x48, 0x24, 0x48, 0x90, 0x00, 0x00 }},
+/* onequarter */ { 188, {0x40, 0xC0, 0x40, 0x40, 0xE4, 0x0C, 0x14, 0x3C, 0x04, 0x00 }},
+/* onehalf */ { 189, {0x40, 0xC0, 0x40, 0x40, 0xE8, 0x14, 0x04, 0x08, 0x1C, 0x00 }},
+/* threequarters */ { 190, {0xC0, 0x20, 0x40, 0x20, 0xC8, 0x18, 0x28, 0x78, 0x08, 0x00 }},
+/* questiondown */ { 191, {0x00, 0x20, 0x00, 0x20, 0x20, 0x40, 0x88, 0x70, 0x00, 0x00 }},
+/* Agrave */ { 192, {0x40, 0x20, 0x70, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* Aacute */ { 193, {0x10, 0x20, 0x70, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* Acircumflex */ { 194, {0x20, 0x50, 0x70, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* Atilde */ { 195, {0x48, 0xB0, 0x70, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* Adieresis */ { 196, {0x50, 0x00, 0x70, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* Aring */ { 197, {0x20, 0x50, 0x70, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00, 0x00 }},
+/* AE */ { 198, {0x00, 0x3C, 0x50, 0x90, 0x9C, 0xF0, 0x90, 0x9C, 0x00, 0x00 }},
+/* Ccedilla */ { 199, {0x00, 0x70, 0x88, 0x80, 0x80, 0x80, 0x88, 0x70, 0x20, 0x40 }},
+/* Egrave */ { 200, {0x40, 0xF8, 0x80, 0x80, 0xF0, 0x80, 0x80, 0xF8, 0x00, 0x00 }},
+/* Eacute */ { 201, {0x10, 0xF8, 0x80, 0x80, 0xF0, 0x80, 0x80, 0xF8, 0x00, 0x00 }},
+/* Ecircumflex */ { 202, {0x20, 0xF8, 0x80, 0x80, 0xF0, 0x80, 0x80, 0xF8, 0x00, 0x00 }},
+/* Edieresis */ { 203, {0x50, 0xF8, 0x80, 0x80, 0xF0, 0x80, 0x80, 0xF8, 0x00, 0x00 }},
+/* Igrave */ { 204, {0x40, 0x20, 0x70, 0x20, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* Iacute */ { 205, {0x10, 0x20, 0x70, 0x20, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* Icircumflex */ { 206, {0x20, 0x50, 0x70, 0x20, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* Idieresis */ { 207, {0x50, 0x00, 0x70, 0x20, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* Eth */ { 208, {0x00, 0xF0, 0x48, 0x48, 0xE8, 0x48, 0x48, 0xF0, 0x00, 0x00 }},
+/* Ntilde */ { 209, {0x28, 0x50, 0x88, 0xC8, 0xA8, 0x98, 0x88, 0x88, 0x00, 0x00 }},
+/* Ograve */ { 210, {0x40, 0x20, 0x70, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Oacute */ { 211, {0x10, 0x20, 0x70, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Ocircumflex */ { 212, {0x20, 0x50, 0x70, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Otilde */ { 213, {0x28, 0x50, 0x70, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Odieresis */ { 214, {0x50, 0x00, 0x70, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* multiply */ { 215, {0x00, 0x00, 0x00, 0x88, 0x50, 0x20, 0x50, 0x88, 0x00, 0x00 }},
+/* Oslash */ { 216, {0x00, 0x70, 0x98, 0x98, 0xA8, 0xC8, 0xC8, 0x70, 0x00, 0x00 }},
+/* Ugrave */ { 217, {0x40, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Uacute */ { 218, {0x10, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Ucircumflex */ { 219, {0x20, 0x50, 0x00, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Udieresis */ { 220, {0x50, 0x00, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* Yacute */ { 221, {0x10, 0x20, 0x88, 0x88, 0x50, 0x20, 0x20, 0x20, 0x00, 0x00 }},
+/* Thorn */ { 222, {0x00, 0x80, 0xF0, 0x88, 0xF0, 0x80, 0x80, 0x80, 0x00, 0x00 }},
+/* germandbls */ { 223, {0x00, 0x70, 0x88, 0x90, 0xA0, 0x90, 0x88, 0xB0, 0x00, 0x00 }},
+/* agrave */ { 224, {0x40, 0x20, 0x00, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* aacute */ { 225, {0x10, 0x20, 0x00, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* acircumflex */ { 226, {0x20, 0x50, 0x00, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* atilde */ { 227, {0x28, 0x50, 0x00, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* adieresis */ { 228, {0x00, 0x50, 0x00, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* aring */ { 229, {0x20, 0x50, 0x20, 0x70, 0x08, 0x78, 0x88, 0x78, 0x00, 0x00 }},
+/* ae */ { 230, {0x00, 0x00, 0x00, 0x78, 0x14, 0x7C, 0x90, 0x7C, 0x00, 0x00 }},
+/* ccedilla */ { 231, {0x00, 0x00, 0x00, 0x70, 0x88, 0x80, 0x88, 0x70, 0x20, 0x40 }},
+/* egrave */ { 232, {0x40, 0x20, 0x00, 0x70, 0x88, 0xF8, 0x80, 0x70, 0x00, 0x00 }},
+/* eacute */ { 233, {0x10, 0x20, 0x00, 0x70, 0x88, 0xF8, 0x80, 0x70, 0x00, 0x00 }},
+/* ecircumflex */ { 234, {0x20, 0x50, 0x00, 0x70, 0x88, 0xF8, 0x80, 0x70, 0x00, 0x00 }},
+/* edieresis */ { 235, {0x00, 0x50, 0x00, 0x70, 0x88, 0xF8, 0x80, 0x70, 0x00, 0x00 }},
+/* igrave */ { 236, {0x40, 0x20, 0x00, 0x60, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* iacute */ { 237, {0x20, 0x40, 0x00, 0x60, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* icircumflex */ { 238, {0x20, 0x50, 0x00, 0x60, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* idieresis */ { 239, {0x00, 0x50, 0x00, 0x60, 0x20, 0x20, 0x20, 0x70, 0x00, 0x00 }},
+/* eth */ { 240, {0x00, 0xC0, 0x30, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* ntilde */ { 241, {0x28, 0x50, 0x00, 0xB0, 0xC8, 0x88, 0x88, 0x88, 0x00, 0x00 }},
+/* ograve */ { 242, {0x40, 0x20, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* oacute */ { 243, {0x10, 0x20, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* ocircumflex */ { 244, {0x20, 0x50, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* otilde */ { 245, {0x28, 0x50, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* odieresis */ { 246, {0x00, 0x50, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00, 0x00 }},
+/* divide */ { 247, {0x00, 0x00, 0x20, 0x00, 0xF8, 0x00, 0x20, 0x00, 0x00, 0x00 }},
+/* oslash */ { 248, {0x00, 0x00, 0x00, 0x78, 0x98, 0xA8, 0xC8, 0xF0, 0x00, 0x00 }},
+/* ugrave */ { 249, {0x40, 0x20, 0x00, 0x88, 0x88, 0x88, 0x98, 0x68, 0x00, 0x00 }},
+/* uacute */ { 250, {0x10, 0x20, 0x00, 0x88, 0x88, 0x88, 0x98, 0x68, 0x00, 0x00 }},
+/* ucircumflex */ { 251, {0x20, 0x50, 0x00, 0x88, 0x88, 0x88, 0x98, 0x68, 0x00, 0x00 }},
+/* udieresis */ { 252, {0x00, 0x50, 0x00, 0x88, 0x88, 0x88, 0x98, 0x68, 0x00, 0x00 }},
+/* yacute */ { 253, {0x00, 0x10, 0x20, 0x88, 0x88, 0x98, 0x68, 0x08, 0x88, 0x70 }},
+/* thorn */ { 254, {0x00, 0x00, 0x80, 0xF0, 0x88, 0x88, 0x88, 0xF0, 0x80, 0x80 }},
+/* ydieresis */ { 255, {0x00, 0x50, 0x00, 0x88, 0x88, 0x98, 0x68, 0x08, 0x88, 0x70 }},
+/* char0 */ { 0, {0x00, 0xA8, 0x00, 0x88, 0x00, 0x88, 0x00, 0xA8, 0x00, 0x00 }}
+};
+
+void alto2_cpu_device::fake_status_putch(int x, UINT8 ch)
+{
+ const bdf_6x10_t* pf = bdf_6x10;
+ while (pf->code != ch && pf->code != 0)
+ pf++;
+ int dx = 6 * x;
+ if (dx >= ALTO2_DISPLAY_WIDTH)
+ return;
+ for (int dy = 0; dy < 10; dy++)
+ {
+ UINT8* pix = m_dsp.scanline[ALTO2_DISPLAY_HEIGHT + 1 + dy] + dx;
+ UINT8 bits = ~pf->bits[dy];
+ pix[0] = (bits >> 7) & 1;
+ pix[1] = (bits >> 6) & 1;
+ pix[2] = (bits >> 5) & 1;
+ pix[3] = (bits >> 4) & 1;
+ pix[4] = (bits >> 3) & 1;
+ pix[5] = (bits >> 2) & 1;
+ }
+
+}
+
+void alto2_cpu_device::fake_status_printf(int x, const char* format, ...)
+{
+ static char buff[256];
+ va_list ap;
+ va_start(ap, format);
+ vsnprintf(buff, sizeof(buff), format, ap);
+ va_end(ap);
+ char* src = buff;
+ while (*src)
+ fake_status_putch(x++, *src++);
+}