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author Curt Coder <curtcoder@mail.com>2012-02-05 15:49:34 +0000
committer Curt Coder <curtcoder@mail.com>2012-02-05 15:49:34 +0000
commit1f2506041222e12bb18df8c6e85769749c4aba4b (patch)
tree8beb8d36a7d1d2f93871326c3aef4dd5555faa9e
parent97685083b189669700d76c4cffbc10aef6ae9437 (diff)
Added PLS100 (82S100) PLA emulation which utilizes a binary JED fusemap. [Curt Coder]
-rw-r--r--.gitattributes2
-rw-r--r--src/emu/emu.mak15
-rw-r--r--src/emu/machine/pls100.c136
-rw-r--r--src/emu/machine/pls100.h94
4 files changed, 240 insertions, 7 deletions
diff --git a/.gitattributes b/.gitattributes
index c2f0d13e524..bff6e3ff0c7 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -935,6 +935,8 @@ src/emu/machine/pic8259.c svneol=native#text/plain
src/emu/machine/pic8259.h svneol=native#text/plain
src/emu/machine/pit8253.c svneol=native#text/plain
src/emu/machine/pit8253.h svneol=native#text/plain
+src/emu/machine/pls100.c svneol=native#text/plain
+src/emu/machine/pls100.h svneol=native#text/plain
src/emu/machine/ram.c svneol=native#text/plain
src/emu/machine/ram.h svneol=native#text/plain
src/emu/machine/rescap.h svneol=native#text/plain
diff --git a/src/emu/emu.mak b/src/emu/emu.mak
index 8cd85435986..3cfe6a21167 100644
--- a/src/emu/emu.mak
+++ b/src/emu/emu.mak
@@ -222,11 +222,12 @@ EMUMACHINEOBJS = \
$(EMUMACHINE)/nmc9306.o \
$(EMUMACHINE)/nvram.o \
$(EMUMACHINE)/pc16552d.o \
- $(EMUMACHINE)/pci.o \
+ $(EMUMACHINE)/pci.o \
$(EMUMACHINE)/pd4990a.o \
$(EMUMACHINE)/pic8259.o \
$(EMUMACHINE)/pit8253.o \
- $(EMUMACHINE)/ram.o \
+ $(EMUMACHINE)/pls100.o \
+ $(EMUMACHINE)/ram.o \
$(EMUMACHINE)/roc10937.o \
$(EMUMACHINE)/rp5c01.o \
$(EMUMACHINE)/rp5c15.o \
@@ -275,19 +276,19 @@ EMUVIDEOOBJS = \
$(EMUVIDEO)/hd44102.o \
$(EMUVIDEO)/hd61830.o \
$(EMUVIDEO)/hd63484.o \
- $(EMUVIDEO)/i8275.o \
+ $(EMUVIDEO)/i8275.o \
$(EMUVIDEO)/k053250.o \
$(EMUVIDEO)/mc6845.o \
$(EMUVIDEO)/msm6255.o \
$(EMUVIDEO)/pc_cga.o \
$(EMUVIDEO)/cgapal.o \
$(EMUVIDEO)/pc_vga.o \
- $(EMUVIDEO)/poly.o \
- $(EMUVIDEO)/psx.o \
+ $(EMUVIDEO)/poly.o \
+ $(EMUVIDEO)/psx.o \
$(EMUVIDEO)/ramdac.o \
$(EMUVIDEO)/resnet.o \
$(EMUVIDEO)/rgbutil.o \
- $(EMUVIDEO)/s2636.o \
+ $(EMUVIDEO)/s2636.o \
$(EMUVIDEO)/saa5050.o \
$(EMUVIDEO)/sed1330.o \
$(EMUVIDEO)/tlc34076.o \
@@ -295,7 +296,7 @@ EMUVIDEOOBJS = \
$(EMUVIDEO)/tms9927.o \
$(EMUVIDEO)/tms9928a.o \
$(EMUVIDEO)/upd3301.o \
- $(EMUVIDEO)/v9938.o \
+ $(EMUVIDEO)/v9938.o \
$(EMUVIDEO)/vector.o \
$(EMUVIDEO)/voodoo.o \
diff --git a/src/emu/machine/pls100.c b/src/emu/machine/pls100.c
new file mode 100644
index 00000000000..c4114b896af
--- /dev/null
+++ b/src/emu/machine/pls100.c
@@ -0,0 +1,136 @@
+/**********************************************************************
+
+ PLS100 16xPAL_TERMSx8 Programmable Logic Array emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#include "emu.h"
+#include "pls100.h"
+
+
+
+//**************************************************************************
+// DEVICE TYPE DEFINITION
+//**************************************************************************
+
+const device_type PLS100 = &device_creator<pls100_device>;
+
+
+
+//**************************************************************************
+// INLINE HELPERS
+//**************************************************************************
+
+//-------------------------------------------------
+// parse_fusemap -
+//-------------------------------------------------
+
+inline void pls100_device::parse_fusemap()
+{
+ jed_data jed;
+ jedbin_parse(machine().region(tag())->base(), machine().region(tag())->bytes(), &jed);
+ UINT32 fusenum = 0;
+ m_xor = 0;
+
+ for (int term = 0; term < PAL_TERMS; term++)
+ {
+ m_and_comp[term] = 0;
+ m_and_true[term] = 0;
+ m_or[term] = 0;
+
+ for (int i = 0; i < PAL_INPUTS; i++)
+ {
+ m_and_comp[term] |= jed_get_fuse(&jed, fusenum++) << i;
+ m_and_true[term] |= jed_get_fuse(&jed, fusenum++) << i;
+ }
+
+ for (int f = 0; f < PAL_OUTPUTS; f++)
+ {
+ m_or[term] |= !jed_get_fuse(&jed, fusenum++) << f;
+ }
+ }
+
+ for (int f = 0; f < PAL_OUTPUTS; f++)
+ {
+ m_xor |= jed_get_fuse(&jed, fusenum++) << f;
+ }
+}
+
+
+//-------------------------------------------------
+// get_product -
+//-------------------------------------------------
+
+inline int pls100_device::get_product(int term)
+{
+ UINT16 input_true = m_and_true[term] | m_i;
+ UINT16 input_comp = m_and_comp[term] | (m_i ^ 0xffff);
+
+ return (input_true & input_comp) == 0xffff;
+}
+
+
+//-------------------------------------------------
+// update_outputs -
+//-------------------------------------------------
+
+inline void pls100_device::update_outputs()
+{
+ m_s = 0;
+
+ for (int term = 0; term < PAL_TERMS; term++)
+ {
+ if (get_product(term))
+ {
+ m_s |= m_or[term];
+ }
+ }
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// pls100_device - constructor
+//-------------------------------------------------
+
+pls100_device::pls100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, PLS100, "PLS100", tag, owner, clock)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void pls100_device::device_start()
+{
+ // parse fusemap
+ assert(machine().region(tag()) != NULL);
+ parse_fusemap();
+
+ // register for state saving
+ save_item(NAME(m_i));
+ save_item(NAME(m_s));
+}
+
+
+//-------------------------------------------------
+// read -
+//-------------------------------------------------
+
+UINT8 pls100_device::read(UINT16 input)
+{
+ m_i = input;
+
+ update_outputs();
+
+ return m_s ^ m_xor;
+}
diff --git a/src/emu/machine/pls100.h b/src/emu/machine/pls100.h
new file mode 100644
index 00000000000..a344ef74854
--- /dev/null
+++ b/src/emu/machine/pls100.h
@@ -0,0 +1,94 @@
+/**********************************************************************
+
+ PLS100 16x48x8 Programmable Logic Array emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************
+ _____ _____
+ FE 1 |* \_/ | 28 Vcc
+ I7 2 | | 27 I8
+ I6 3 | | 26 I9
+ I5 4 | | 25 I10
+ I4 5 | | 24 I11
+ I3 6 | 82S100 | 23 I12
+ I2 7 | 82S101 | 22 I13
+ I1 8 | PLS100 | 21 I14
+ I0 9 | PLS101 | 20 I15
+ F7 10 | | 19 _CE
+ F6 11 | | 18 F0
+ F5 12 | | 17 F1
+ F4 13 | | PAL_OUTPUTS F2
+ GND 14 |_____________| 15 F3
+
+**********************************************************************/
+
+
+#pragma once
+
+#ifndef __PLS100__
+#define __PLS100__
+
+#include "emu.h"
+#include "jedparse.h"
+
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+#define PAL_INPUTS 16
+#define PAL_OUTPUTS 8
+#define PAL_TERMS 48
+
+
+
+///*************************************************************************
+// INTERFACE CONFIGURATION MACROS
+///*************************************************************************
+
+#define MCFG_PLS100_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, PLS100, 0)
+
+
+
+///*************************************************************************
+// TYPE DEFINITIONS
+///*************************************************************************
+
+// ======================> pls100_device
+
+class pls100_device : public device_t
+{
+public:
+ // construction/destruction
+ pls100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ UINT8 read(UINT16 input);
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+
+private:
+ inline void parse_fusemap();
+ inline int get_product(int term);
+ inline void update_outputs();
+
+ UINT16 m_i;
+ UINT8 m_s;
+ UINT16 m_and_true[PAL_TERMS];
+ UINT16 m_and_comp[PAL_TERMS];
+ UINT16 m_or[PAL_TERMS];
+ UINT8 m_xor;
+};
+
+
+// device type definition
+extern const device_type PLS100;
+
+
+
+#endif