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Diffstat (limited to 'src/mame/drivers/decstation.cpp')
-rw-r--r--src/mame/drivers/decstation.cpp186
1 files changed, 45 insertions, 141 deletions
diff --git a/src/mame/drivers/decstation.cpp b/src/mame/drivers/decstation.cpp
index c75668f2e13..4d7d412e1a9 100644
--- a/src/mame/drivers/decstation.cpp
+++ b/src/mame/drivers/decstation.cpp
@@ -73,6 +73,7 @@
#include "bus/rs232/rs232.h"
#include "screen.h"
#include "video/bt459.h"
+#include "video/decsfb.h"
class decstation_state : public driver_device
{
@@ -82,6 +83,7 @@ public:
m_maincpu(*this, "maincpu"),
m_screen(*this, "screen"),
m_scantimer(*this, "scantimer"),
+ m_sfb(*this, "sfb"),
m_lk201(*this, "lk201"),
m_ioga(*this, "ioga"),
m_rtc(*this, "rtc"),
@@ -103,6 +105,7 @@ public:
protected:
DECLARE_READ_LINE_MEMBER(brcond0_r) { return ASSERT_LINE; }
DECLARE_WRITE_LINE_MEMBER(ioga_irq_w);
+ DECLARE_WRITE_LINE_MEMBER(dz_irq_w);
DECLARE_READ32_MEMBER(cfb_r);
DECLARE_WRITE32_MEMBER(cfb_w);
@@ -130,9 +133,10 @@ private:
uint32_t kn01_screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
- required_device<mips1core_device_base> m_maincpu;
+ required_device<mips1_device_base> m_maincpu;
required_device<screen_device> m_screen;
optional_device<timer_device> m_scantimer;
+ optional_device<decsfb_device> m_sfb;
optional_device<lk201_device> m_lk201;
optional_device<dec_ioga_device> m_ioga;
required_device<mc146818_device> m_rtc;
@@ -148,9 +152,6 @@ private:
void threemin_map(address_map &map);
u8 *m_vrom_ptr;
- u32 m_vram[0x200000/4];
- u32 m_sfb[0x80];
- int m_copy_src;
u32 m_kn01_control, m_kn01_status;
u32 m_palette[256], m_overlay[256];
@@ -190,69 +191,27 @@ uint32_t decstation_state::kn01_screen_update(screen_device &screen, bitmap_rgb3
uint32_t decstation_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- m_bt459->screen_update(screen, bitmap, cliprect, (uint8_t *)&m_vram[0]);
+ m_bt459->screen_update(screen, bitmap, cliprect, (uint8_t *)m_sfb->get_vram());
return 0;
}
-/*
- 0x100000 copy register 0
- 0x100004 copy register 1
- 0x100008 copy register 2
- 0x10000C copy register 3
- 0x100010 copy register 4
- 0x100014 copy register 5
- 0x100018 copy register 6
- 0x10001C copy register 7
- 0x100020 foreground register
- 0x100024 background register
- 0x100028 plane mask
- 0x10002C pixel mask
- 0x100030 cxt mode
- 0x100034 boolean operation
- 0x100038 pixel shift
- 0x10003C line address
- 0x100040 bresh 1
- 0x100044 bresh 2
- 0x100048 bresh 3
- 0x10004C bresh continue
- 0x100050 deep register
- 0x100054 start register
- 0x100058 Clear Interrupt
- 0x10005C reserved 2
- 0x100060 refresh count
- 0x100064 video horiz
- 0x100068 video vertical
- 0x10006C refresh base
- 0x100070 video valid
- 0x100074 Interrupt Enable
-*/
-
-#define MODE_SIMPLE 0
-#define MODE_OPAQUESTIPPLE 1
-#define MODE_OPAQUELINE 2
-#define MODE_TRANSPARENTSTIPPLE 5
-#define MODE_TRANSPARENTLINE 6
-#define MODE_COPY 7
-
READ32_MEMBER(decstation_state::cfb_r)
{
uint32_t addr = offset << 2;
-// logerror("cfb_r: reading at %x\n", addr);
+ //logerror("cfb_r: reading at %x\n", addr);
- if (addr < 0x800000)
+ if (addr < 0x80000)
{
return m_vrom_ptr[addr>>2] & 0xff;
}
if ((addr >= 0x100000) && (addr < 0x100200))
{
- return m_sfb[offset-(0x100000/4)];
}
if ((addr >= 0x200000) && (addr < 0x400000))
{
- return m_vram[offset-(0x200000/4)];
}
return 0xffffffff;
@@ -264,13 +223,6 @@ WRITE32_MEMBER(decstation_state::cfb_w)
if ((addr >= 0x100000) && (addr < 0x100200))
{
- //printf("SFB: %08x (mask %08x) @ %x\n", data, mem_mask, offset<<2);
- COMBINE_DATA(&m_sfb[offset-(0x100000/4)]);
-
- if ((addr == 0x100030) && (data = 7))
- {
- m_copy_src = 1;
- }
return;
}
@@ -282,70 +234,6 @@ WRITE32_MEMBER(decstation_state::cfb_w)
if ((addr >= 0x200000) && (addr < 0x400000))
{
- //printf("FB: %08x (mask %08x) @ %x\n", data, mem_mask, offset<<2);
-
- switch (m_sfb[0x30/4])
- {
- case MODE_SIMPLE: // simple
- COMBINE_DATA(&m_vram[offset-(0x200000/4)]);
- break;
-
- case MODE_TRANSPARENTSTIPPLE:
- {
- uint8_t *pVRAM = (uint8_t *)&m_vram[offset-(0x200000/4)];
- uint8_t fgs[4];
-
- fgs[0] = m_sfb[0x20/4] >> 24;
- fgs[1] = (m_sfb[0x20/4] >> 16) & 0xff;
- fgs[2] = (m_sfb[0x20/4] >> 8) & 0xff;
- fgs[3] = m_sfb[0x20/4] & 0xff;
- for (int x = 0; x < 32; x++)
- {
- if (data & (1<<(31-x)))
- {
- pVRAM[x] = fgs[x & 3];
- }
- }
- }
- break;
-
- case MODE_COPY:
- {
- uint8_t *pVRAM = (uint8_t *)&m_vram[offset-(0x200000/4)];
- uint8_t *pBuffer = (uint8_t *)&m_sfb[0]; // first 8 32-bit regs are the copy buffer
-
- if (m_copy_src)
- {
- m_copy_src = 0;
-
- for (int x = 0; x < 32; x++)
- {
- if (data & (1<<(31-x)))
- {
- pBuffer[x] = pVRAM[x];
- }
- }
- }
- else
- {
- m_copy_src = 1;
-
- for (int x = 0; x < 32; x++)
- {
- if (data & (1<<(31-x)))
- {
- pVRAM[x] = pBuffer[x];
- }
- }
- }
- }
- break;
-
- default:
- logerror("SFB: Unsupported VRAM write %08x (mask %08x) at %08x in mode %x\n", data, mem_mask, offset<<2, m_sfb[0x30/4]);
- break;
- }
- return;
}
}
@@ -551,18 +439,24 @@ WRITE_LINE_MEMBER(decstation_state::ioga_irq_w)
m_maincpu->set_input_line(INPUT_LINE_IRQ3, state);
}
+WRITE_LINE_MEMBER(decstation_state::dz_irq_w)
+{
+ m_maincpu->set_input_line(INPUT_LINE_IRQ2, state);
+}
+
void decstation_state::machine_start()
{
if (m_vrom)
m_vrom_ptr = m_vrom->base();
- save_item(NAME(m_vram));
- save_item(NAME(m_sfb));
- save_item(NAME(m_copy_src));
}
void decstation_state::machine_reset()
{
- m_copy_src = 1;
+ if (m_ioga)
+ {
+ m_ioga->set_dma_space(&m_maincpu->space(AS_PROGRAM));
+ }
+
m_entry = 0;
m_stage = 0;
m_r = m_g = m_b = 0;
@@ -612,8 +506,10 @@ void decstation_state::kn01_map(address_map &map)
void decstation_state::threemin_map(address_map &map)
{
map(0x00000000, 0x07ffffff).ram(); // full 128 MB
- map(0x10000000, 0x13ffffff).rw(FUNC(decstation_state::cfb_r), FUNC(decstation_state::cfb_w));
+ map(0x10000000, 0x1007ffff).rw(FUNC(decstation_state::cfb_r), FUNC(decstation_state::cfb_w));
+ map(0x10100000, 0x101001ff).rw(m_sfb, FUNC(decsfb_device::read), FUNC(decsfb_device::write));
map(0x101c0000, 0x101c000f).m("bt459", FUNC(bt459_device::map)).umask32(0x000000ff);
+ map(0x10200000, 0x103fffff).rw(m_sfb, FUNC(decsfb_device::vram_r), FUNC(decsfb_device::vram_w));
map(0x1c000000, 0x1c07ffff).m(m_ioga, FUNC(dec_ioga_device::map));
map(0x1c0c0000, 0x1c0c0007).rw(m_lance, FUNC(am79c90_device::regs_r), FUNC(am79c90_device::regs_w)).umask32(0x0000ffff);
map(0x1c100000, 0x1c100003).rw(m_scc0, FUNC(z80scc_device::ca_r), FUNC(z80scc_device::ca_w)).umask32(0x0000ff00);
@@ -647,10 +543,11 @@ static void dec_scsi_devices(device_slot_interface &device)
device.option_add_internal("asc", NCR53C94);
}
-MACHINE_CONFIG_START(decstation_state::kn01)
+void decstation_state::kn01(machine_config &config)
+{
R2000(config, m_maincpu, 16.67_MHz_XTAL, 65536, 131072);
m_maincpu->set_endianness(ENDIANNESS_LITTLE);
- m_maincpu->set_fpurev(0x340);
+ m_maincpu->set_fpu(mips1_device_base::MIPS_R3010Av4);
m_maincpu->in_brcond<0>().set(FUNC(decstation_state::brcond0_r));
m_maincpu->set_addrmap(AS_PROGRAM, &decstation_state::kn01_map);
@@ -662,17 +559,20 @@ MACHINE_CONFIG_START(decstation_state::kn01)
m_scantimer->configure_scanline(FUNC(decstation_state::scanline_timer), "screen", 0, 1);
DC7085(config, m_dz, 0);
+ m_dz->int_cb().set(FUNC(decstation_state::dz_irq_w));
+ m_dz->ch1_tx_cb().set("dc7085:ch1", FUNC(dc7085_channel::rx_w));
AM79C90(config, m_lance, XTAL(12'500'000));
MC146818(config, m_rtc, XTAL(32'768));
m_rtc->set_binary(true);
-MACHINE_CONFIG_END
+}
-MACHINE_CONFIG_START(decstation_state::kn02ba)
+void decstation_state::kn02ba(machine_config &config)
+{
R3000A(config, m_maincpu, 33.333_MHz_XTAL, 65536, 131072);
m_maincpu->set_endianness(ENDIANNESS_LITTLE);
- m_maincpu->set_fpurev(0x340); // should be R3010A v4.0
+ m_maincpu->set_fpu(mips1_device_base::MIPS_R3010Av4);
m_maincpu->in_brcond<0>().set(FUNC(decstation_state::brcond0_r));
m_maincpu->set_addrmap(AS_PROGRAM, &decstation_state::threemin_map);
@@ -680,10 +580,15 @@ MACHINE_CONFIG_START(decstation_state::kn02ba)
m_screen->set_raw(130000000, 1704, 32, (1280+32), 1064, 3, (1024+3));
m_screen->set_screen_update(FUNC(decstation_state::screen_update));
+ DECSFB(config, m_sfb, 25'000'000); // clock based on white paper which quotes "40ns" gate array cycle times
+// m_sfb->int_cb().set(FUNC(dec_ioga_device::slot0_irq_w));
+
BT459(config, m_bt459, 83'020'800);
AM79C90(config, m_lance, XTAL(12'500'000));
m_lance->intr_out().set("ioga", FUNC(dec_ioga_device::lance_irq_w));
+ m_lance->dma_in().set("ioga", FUNC(dec_ioga_device::lance_dma_r));
+ m_lance->dma_out().set("ioga", FUNC(dec_ioga_device::lance_dma_w));
DECSTATION_IOGA(config, m_ioga, XTAL(12'500'000));
m_ioga->irq_out().set(FUNC(decstation_state::ioga_irq_w));
@@ -714,17 +619,16 @@ MACHINE_CONFIG_START(decstation_state::kn02ba)
rs232b.dcd_handler().set(m_scc0, FUNC(z80scc_device::dcdb_w));
rs232b.cts_handler().set(m_scc0, FUNC(z80scc_device::ctsb_w));
- MCFG_NSCSI_BUS_ADD("scsibus")
- MCFG_NSCSI_ADD("scsibus:0", dec_scsi_devices, "harddisk", false)
- MCFG_NSCSI_ADD("scsibus:1", dec_scsi_devices, "cdrom", false)
- MCFG_NSCSI_ADD("scsibus:2", dec_scsi_devices, nullptr, false)
- MCFG_NSCSI_ADD("scsibus:3", dec_scsi_devices, nullptr, false)
- MCFG_NSCSI_ADD("scsibus:4", dec_scsi_devices, nullptr, false)
- MCFG_NSCSI_ADD("scsibus:5", dec_scsi_devices, nullptr, false)
- MCFG_NSCSI_ADD("scsibus:6", dec_scsi_devices, nullptr, false)
- MCFG_NSCSI_ADD("scsibus:7", dec_scsi_devices, "asc", true)
- MCFG_SLOT_OPTION_MACHINE_CONFIG("asc", [this] (device_t *device) { ncr5394(device); })
-MACHINE_CONFIG_END
+ NSCSI_BUS(config, "scsibus");
+ NSCSI_CONNECTOR(config, "scsibus:0", dec_scsi_devices, "harddisk");
+ NSCSI_CONNECTOR(config, "scsibus:1", dec_scsi_devices, "cdrom");
+ NSCSI_CONNECTOR(config, "scsibus:2", dec_scsi_devices, nullptr);
+ NSCSI_CONNECTOR(config, "scsibus:3", dec_scsi_devices, nullptr);
+ NSCSI_CONNECTOR(config, "scsibus:4", dec_scsi_devices, nullptr);
+ NSCSI_CONNECTOR(config, "scsibus:5", dec_scsi_devices, nullptr);
+ NSCSI_CONNECTOR(config, "scsibus:6", dec_scsi_devices, nullptr);
+ NSCSI_CONNECTOR(config, "scsibus:7", dec_scsi_devices, "asc", true).set_option_machine_config("asc", [this] (device_t *device) { ncr5394(device); });
+}
static INPUT_PORTS_START( decstation )
PORT_START("UNUSED") // unused IN0