diff options
author | 2016-12-15 15:46:32 +0100 | |
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committer | 2016-12-15 15:46:32 +0100 | |
commit | d25e9f1e25498b6ff3e57a9ac71d3cb295f3068f (patch) | |
tree | e51eb2448e560ad0d8586c75a76de459fec239e4 | |
parent | 88319825af8730eeb1786b7f6eb38c4b050c722c (diff) |
ScrollUP fix for the Otrona Attachè
The implementation of the scroll register is partially delegated to the specific machine video driver.
This same approach was used on the ITT3030 emulation and is probably ok for this peculiar controller.
-rw-r--r-- | src/mame/drivers/attache.cpp | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/src/mame/drivers/attache.cpp b/src/mame/drivers/attache.cpp index deb7495b6af..8172815e861 100644 --- a/src/mame/drivers/attache.cpp +++ b/src/mame/drivers/attache.cpp @@ -222,7 +222,7 @@ private: // bit 7 = subscript (superscript and subscript combined produces strikethrough) uint32_t attache_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { - uint8_t x,y,bit,scan,data; + uint8_t x,y,vy,start,bit,scan,data; uint8_t dbl_mode = 0; // detemines which half of character to display when using double size attribute, // as it can start on either odd or even character cells. @@ -261,16 +261,20 @@ uint32_t attache_state::screen_update(screen_device &screen, bitmap_rgb32 &bitma } else bitmap.fill(0); - + // Text output for(y=0;y<(bitmap.height()-1)/10;y++) // lines { + start = m_crtc->upscroll_offset(); + vy = (start + y) % 24; + for(x=0;x<(bitmap.width()-1)/8;x++) // columns { assert(((y*128)+x) >= 0 && ((y*128)+x) < ARRAY_LENGTH(m_char_ram)); - uint8_t ch = m_char_ram[(y*128)+x]; - pen_t fg = m_palette->pen(m_attr_ram[(y*128)+x] & 0x08 ? 2 : 1); // brightness - if(m_attr_ram[(y*128)+x] & 0x10) // double-size + assert(((vy*128)+x) >= 0 && ((vy*128)+x) < ARRAY_LENGTH(m_char_ram)); + uint8_t ch = m_char_ram[(vy*128)+x]; + pen_t fg = m_palette->pen(m_attr_ram[(vy*128)+x] & 0x08 ? 2 : 1); // brightness + if(m_attr_ram[(vy*128)+x] & 0x10) // double-size dbl_mode++; else dbl_mode = 0; @@ -278,16 +282,16 @@ uint32_t attache_state::screen_update(screen_device &screen, bitmap_rgb32 &bitma for(scan=0;scan<10;scan++) // 10 scanlines per line { data = m_char_rom->base()[ch*16+scan]; - if((m_attr_ram[(y*128)+x] & 0xc0) != 0xc0) // if not strikethrough + if((m_attr_ram[(vy*128)+x] & 0xc0) != 0xc0) // if not strikethrough { - if(m_attr_ram[(y*128)+x] & 0x40) // superscript + if(m_attr_ram[(vy*128)+x] & 0x40) // superscript { if(scan >= 5) data = 0; else data = m_char_rom->base()[ch*16+(scan*2)+1]; } - if(m_attr_ram[(y*128)+x] & 0x80) // subscript + if(m_attr_ram[(vy*128)+x] & 0x80) // subscript { if(scan < 5) data = 0; @@ -295,13 +299,13 @@ uint32_t attache_state::screen_update(screen_device &screen, bitmap_rgb32 &bitma data = m_char_rom->base()[ch*16+((scan-5)*2)+1]; } } - if((m_attr_ram[(y*128)+x] & 0x20) && scan == 9) // underline + if((m_attr_ram[(vy*128)+x] & 0x20) && scan == 9) // underline data = 0xff; - if((m_attr_ram[(y*128)+x] & 0xc0) == 0xc0 && scan == 3) // strikethrough + if((m_attr_ram[(vy*128)+x] & 0xc0) == 0xc0 && scan == 3) // strikethrough data = 0xff; - if(m_attr_ram[(y*128)+x] & 0x04) // reverse + if(m_attr_ram[(vy*128)+x] & 0x04) // reverse data = ~data; - if(m_attr_ram[(y*128)+x] & 0x10) // double-size + if(m_attr_ram[(vy*128)+x] & 0x10) // double-size { uint8_t newdata = 0; if(dbl_mode & 1) @@ -630,6 +634,7 @@ WRITE8_MEMBER(attache_state::display_data_w) break; case DISP_CRTC: m_crtc->write(space, m_crtc_reg_select, data); + //logerror("CRTC: write reg %02x, data %02x\n",m_crtc_reg_select,data); break; case DISP_ATTR: m_attr_ram[(m_attr_line*128)+(param & 0x7f)] = data; @@ -754,7 +759,7 @@ static ADDRESS_MAP_START( attache_io , AS_IO, 8, attache_state) AM_RANGE(0xe0, 0xed) AM_DEVREADWRITE("dma",am9517a_device,read,write) AM_MIRROR(0xff00) AM_RANGE(0xee, 0xee) AM_WRITE(display_command_w) AM_MIRROR(0xff00) AM_RANGE(0xef, 0xef) AM_READWRITE(dma_mask_r, dma_mask_w) AM_MIRROR(0xff00) - AM_RANGE(0xf0, 0xf3) AM_DEVREADWRITE("sio",z80sio0_device,ba_cd_r, ba_cd_w) AM_MIRROR(0xff00) + AM_RANGE(0xe6, 0xe7) AM_DEVREADWRITE("sio",z80sio0_device,ba_cd_r, ba_cd_w) AM_MIRROR(0xff00) AM_RANGE(0xf4, 0xf7) AM_DEVREADWRITE("ctc",z80ctc_device,read,write) AM_MIRROR(0xff00) AM_RANGE(0xf8, 0xfb) AM_DEVREADWRITE("pio",z80pio_device,read_alt,write_alt) AM_MIRROR(0xff00) AM_RANGE(0xfc, 0xfd) AM_DEVICE("fdc",upd765a_device,map) AM_MIRROR(0xff00) @@ -993,4 +998,4 @@ ROM_START( attache ) ROM_END /* YEAR NAME PARENT COMPAT MACHINE INPUT DEVICE INIT COMPANY FULLNAME FLAGS */ -COMP( 1982, attache, 0, 0, attache, attache, driver_device, 0, "Otrona", "Attach\xC3\xA9", MACHINE_IMPERFECT_GRAPHICS|MACHINE_NOT_WORKING) +COMP( 1982, attache, 0, 0, attache, attache, driver_device, 0, "Otrona", "Attach\xC3\xA9", MACHINE_IMPERFECT_GRAPHICS) |