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author Curt Coder <curtcoder@mail.com>2012-09-11 14:30:18 +0000
committer Curt Coder <curtcoder@mail.com>2012-09-11 14:30:18 +0000
commit1df58104fedb600014fa1c1908bf8ee7972b48d4 (patch)
tree7521f5b6fd21750b69167788d259604aea41cabb /src/emu
parent1b2cab76dfab1d31854df0143488b14266320864 (diff)
Generalized the PLS100 into a PLA device of variable amounts of inputs/outputs/terms. [Curt Coder]
Diffstat (limited to 'src/emu')
-rw-r--r--src/emu/emu.mak22
-rw-r--r--src/emu/machine/pla.c (renamed from src/emu/machine/pls100.c)48
-rw-r--r--src/emu/machine/pla.h (renamed from src/emu/machine/pls100.h)55
3 files changed, 81 insertions, 44 deletions
diff --git a/src/emu/emu.mak b/src/emu/emu.mak
index 6351390faee..67d9bb9bde0 100644
--- a/src/emu/emu.mak
+++ b/src/emu/emu.mak
@@ -223,17 +223,17 @@ EMUMACHINEOBJS = \
$(EMUMACHINE)/netlist.o \
$(EMUMACHINE)/net_lib.o \
$(EMUMACHINE)/nmc9306.o \
- $(EMUMACHINE)/nscsi_bus.o \
- $(EMUMACHINE)/nscsi_cd.o \
- $(EMUMACHINE)/nscsi_hd.o \
+ $(EMUMACHINE)/nscsi_bus.o \
+ $(EMUMACHINE)/nscsi_cd.o \
+ $(EMUMACHINE)/nscsi_hd.o \
$(EMUMACHINE)/nvram.o \
$(EMUMACHINE)/pc16552d.o \
- $(EMUMACHINE)/pci.o \
+ $(EMUMACHINE)/pci.o \
$(EMUMACHINE)/pd4990a.o \
$(EMUMACHINE)/pic8259.o \
$(EMUMACHINE)/pit8253.o \
- $(EMUMACHINE)/pls100.o \
- $(EMUMACHINE)/ram.o \
+ $(EMUMACHINE)/pla.o \
+ $(EMUMACHINE)/ram.o \
$(EMUMACHINE)/roc10937.o \
$(EMUMACHINE)/rp5c01.o \
$(EMUMACHINE)/rp5c15.o \
@@ -293,7 +293,7 @@ EMUVIDEOOBJS = \
$(EMUVIDEO)/huc6261.o \
$(EMUVIDEO)/huc6270.o \
$(EMUVIDEO)/huc6272.o \
- $(EMUVIDEO)/i8275.o \
+ $(EMUVIDEO)/i8275.o \
$(EMUVIDEO)/k053250.o \
$(EMUVIDEO)/m50458.o \
$(EMUVIDEO)/mb90082.o \
@@ -302,12 +302,12 @@ EMUVIDEOOBJS = \
$(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 \
@@ -315,7 +315,7 @@ 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/pla.c
index 2f3a0ba2d85..28c1609e11a 100644
--- a/src/emu/machine/pls100.c
+++ b/src/emu/machine/pla.c
@@ -7,8 +7,7 @@
**********************************************************************/
-#include "emu.h"
-#include "pls100.h"
+#include "pla.h"
@@ -17,6 +16,7 @@
//**************************************************************************
const device_type PLS100 = &device_creator<pls100_device>;
+const device_type MOS8721 = &device_creator<mos8721_device>;
@@ -28,32 +28,32 @@ const device_type PLS100 = &device_creator<pls100_device>;
// parse_fusemap -
//-------------------------------------------------
-inline void pls100_device::parse_fusemap()
+inline void pla_device::parse_fusemap()
{
jed_data jed;
jedbin_parse(machine().root_device().memregion(tag())->base(), machine().root_device().memregion(tag())->bytes(), &jed);
UINT32 fusenum = 0;
m_xor = 0;
- for (int term = 0; term < PAL_TERMS; term++)
+ for (int term = 0; term < m_terms; term++)
{
m_and_comp[term] = 0;
m_and_true[term] = 0;
m_or[term] = 0;
- for (int i = 0; i < PAL_INPUTS; i++)
+ for (int i = 0; i < m_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++)
+ for (int f = 0; f < m_outputs; f++)
{
m_or[term] |= !jed_get_fuse(&jed, fusenum++) << f;
}
}
- for (int f = 0; f < PAL_OUTPUTS; f++)
+ for (int f = 0; f < m_outputs; f++)
{
m_xor |= jed_get_fuse(&jed, fusenum++) << f;
}
@@ -64,12 +64,12 @@ inline void pls100_device::parse_fusemap()
// get_product -
//-------------------------------------------------
-inline int pls100_device::get_product(int term)
+inline int pla_device::get_product(int term)
{
- UINT16 input_true = m_and_true[term] | m_i;
- UINT16 input_comp = m_and_comp[term] | (m_i ^ 0xffff);
+ UINT32 input_true = m_and_true[term] | m_i;
+ UINT32 input_comp = m_and_comp[term] | ~m_i;
- return (input_true & input_comp) == 0xffff;
+ return ((input_true & input_comp) & m_output_mask) == m_output_mask;
}
@@ -77,11 +77,11 @@ inline int pls100_device::get_product(int term)
// update_outputs -
//-------------------------------------------------
-inline void pls100_device::update_outputs()
+inline void pla_device::update_outputs()
{
m_s = 0;
- for (int term = 0; term < PAL_TERMS; term++)
+ for (int term = 0; term < m_terms; term++)
{
if (get_product(term))
{
@@ -97,11 +97,25 @@ inline void pls100_device::update_outputs()
//**************************************************************************
//-------------------------------------------------
-// pls100_device - constructor
+// pla_device - constructor
//-------------------------------------------------
+pla_device::pla_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, int inputs, int outputs, int terms, UINT32 output_mask)
+ : device_t(mconfig, type, name, tag, owner, clock),
+ m_inputs(inputs),
+ m_outputs(outputs),
+ m_terms(terms),
+ m_output_mask(output_mask)
+{
+}
+
pls100_device::pls100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
- : device_t(mconfig, PLS100, "PLS100", tag, owner, clock)
+ : pla_device(mconfig, PLS100, "PLS100", tag, owner, clock, 16, 8, 48, 0xffff)
+{
+}
+
+mos8721_device::mos8721_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : pla_device(mconfig, MOS8721, "MOS8721", tag, owner, clock, 27, 18, 48, 0x7ffffff)
{
}
@@ -110,7 +124,7 @@ pls100_device::pls100_device(const machine_config &mconfig, const char *tag, dev
// device_start - device-specific startup
//-------------------------------------------------
-void pls100_device::device_start()
+void pla_device::device_start()
{
// parse fusemap
assert(machine().root_device().memregion(tag()) != NULL);
@@ -126,7 +140,7 @@ void pls100_device::device_start()
// read -
//-------------------------------------------------
-UINT8 pls100_device::read(UINT16 input)
+UINT32 pla_device::read(UINT32 input)
{
m_i = input;
diff --git a/src/emu/machine/pls100.h b/src/emu/machine/pla.h
index 80f9cc7d09a..1a20a8f0280 100644
--- a/src/emu/machine/pls100.h
+++ b/src/emu/machine/pla.h
@@ -26,8 +26,8 @@
#pragma once
-#ifndef __PLS100__
-#define __PLS100__
+#ifndef __PLA__
+#define __PLA__
#include "emu.h"
#include "jedparse.h"
@@ -38,9 +38,7 @@
// MACROS / CONSTANTS
//**************************************************************************
-#define PAL_INPUTS 16
-#define PAL_OUTPUTS 8
-#define PAL_TERMS 48
+#define MAX_TERMS 512
@@ -51,42 +49,67 @@
#define MCFG_PLS100_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PLS100, 0)
+#define MCFG_MOS8721_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, MOS8721, 0)
///*************************************************************************
// TYPE DEFINITIONS
///*************************************************************************
-// ======================> pls100_device
+// ======================> pla_device
-class pls100_device : public device_t
+class pla_device : public device_t
{
public:
// construction/destruction
- pls100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ pla_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, int inputs, int outputs, int terms, UINT32 output_mask);
- UINT8 read(UINT16 input);
+ UINT32 read(UINT32 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;
+ int m_inputs;
+ int m_outputs;
+ int m_terms;
+ UINT32 m_output_mask;
+
+ UINT32 m_i;
+ UINT32 m_s;
+ UINT32 m_and_true[MAX_TERMS];
+ UINT32 m_and_comp[MAX_TERMS];
+ UINT32 m_or[MAX_TERMS];
+ UINT32 m_xor;
+};
+
+
+// ======================> pls100_device
+
+class pls100_device : public pla_device
+{
+public:
+ pls100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+
+// ======================> mos8721_device
+
+class mos8721_device : public pla_device
+{
+public:
+ mos8721_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
// device type definition
extern const device_type PLS100;
+extern const device_type MOS8721;