*
* Copyright (C) 1999,99 Drotos Daniel, Talker Bt.
*
- * Written by Karl Bongers karl@turbobit.com
- *
* To contact author send email to drdani@mazsola.iit.uni-miskolc.hu
+ * Other contributors include:
+ * Karl Bongers karl@turbobit.com,
+ * Johan Knol johan.knol@iduna.nl
*
*/
class cl_xa: public cl_uc
{
public:
- cl_mem *ram;
- cl_mem *rom;
+ class cl_address_space *ram;
+ class cl_address_space *rom;
struct t_regs regs;
+ class cl_address_space *sfr, *iram;
+
// for now make it as simple as possible
- TYPE_UBYTE mem_direct[1024*2];
-#ifndef WORDS_BIGENDIAN
- TYPE_UWORD *wmem_direct; /* word pointer at mem_direct */
-#endif
+// TYPE_UBYTE mem_direct[1024*2];
+//#ifndef WORDS_BIGENDIAN
+// TYPE_UWORD *wmem_direct; /* word pointer at mem_direct */
+//#endif
public:
cl_xa(class cl_sim *asim);
virtual int init(void);
virtual char *id_string(void);
- virtual t_addr get_mem_size(enum mem_class type);
+ //virtual class cl_m *mk_mem(enum mem_class type, char *class_name);
+ //virtual t_addr get_mem_size(enum mem_class type);
virtual void mk_hw_elements(void);
+ virtual void make_memories(void);
virtual struct dis_entry *dis_tbl(void);
+ virtual struct name_entry *sfr_tbl(void);
+ virtual struct name_entry *bit_tbl(void);
+ virtual char *get_dir_name(short);
+ virtual char *get_bit_name(short);
+
virtual int inst_length(t_addr addr);
virtual int inst_branch(t_addr addr);
virtual int longest_inst(void);
int *mnemonic);
virtual char *disass(t_addr addr, char *sep);
- virtual void print_regs(class cl_console *con);
+ virtual void print_regs(class cl_console_base *con);
virtual int exec_inst(void);
virtual int get_reg(int word_flag, unsigned int index);
+ virtual void store1(t_addr addr, unsigned char val);
+ virtual void store2(t_addr addr, unsigned short val);
+ virtual unsigned char get1(t_addr addr);
+ virtual unsigned short get2(t_addr addr);
+
+ virtual bool get_bit(int bit);
+ virtual void set_bit(int bit, int value);
+
#include "instcl.h"
-};
+ private :
+
+ /* following are macros which get substituted for FUNC1() and FUNC2()
+ in the inst.cc to form the body of ADD,ADDC,SUB,XOR,... */
+ /* can I put these in the .cc file and still have them do the inline thing? */
+ /*-------------------------------------
+ add - flags changed:C,AC,V,N,Z.
+ |---------------------------------------*/
+ inline unsigned char add1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst + src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (result & 0x80) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned char) result;
+ }
+
+ inline unsigned short add2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst + src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (result & 0x80) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned short) result;
+ }
+
+ /*-------------------------------------
+ addc - flags changed:C,AC,V,N,Z.
+ |---------------------------------------*/
+ inline unsigned char addc1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ if (flags & BIT_C) {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst + src + 1;
+ } else {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst + src;
+ }
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (result & 0x80) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned char) result;
+ }
+
+ inline unsigned short addc2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ if (flags & BIT_C) {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst + src + 1;
+ } else {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst + src;
+ }
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (result & 0x80) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned short) result;
+ }
+
+ /*-------------------------------------
+ sub - flags changed:C,AC,V,N,Z.
+ |---------------------------------------*/
+ inline unsigned char sub1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned char) result;
+ }
+
+ inline unsigned short sub2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned short) result;
+ }
+
+ /*-------------------------------------
+ subb - flags changed:C,AC,V,N,Z.
+ |---------------------------------------*/
+ inline unsigned char subb1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ if (flags & BIT_C) {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src - 1;
+ } else {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ }
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned char) result;
+ }
+
+ inline unsigned short subb2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ if (flags & BIT_C) {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src - 1;
+ } else {
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ }
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned short) result;
+ }
+
+ /*-------------------------------------
+ cmp - flags changed:C,AC,V,N,Z.
+ |---------------------------------------*/
+ inline unsigned char cmp1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned char) dst;
+ }
+
+ inline unsigned short cmp2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ /* fixme: do AC, V */
+ set_psw(flags);
+ return (unsigned short) dst;
+ }
+
+ /*-------------------------------------
+ and - flags changed:N,Z.
+ |---------------------------------------*/
+ inline unsigned char and1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ result = dst & src;
+ if (result == 0) flags |= BIT_Z;
+ if (result & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned char) result;
+ }
+
+ inline unsigned short and2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ result = dst & src;
+ if (result == 0) flags |= BIT_Z;
+ if (result & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned short) result;
+ }
+
+ /*-------------------------------------
+ or - flags changed:N,Z.
+ |---------------------------------------*/
+ inline unsigned char or1(unsigned char dst, unsigned char src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ result = dst | src;
+ if (result == 0) flags |= BIT_Z;
+ if (result & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned char) result;
+ }
+
+ inline unsigned short or2(unsigned short dst, unsigned short src)
+ {
+ unsigned int result;
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ result = dst | src;
+ if (result == 0) flags |= BIT_Z;
+ if (result & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned short) result;
+ }
+
+ /*-------------------------------------
+ xor - flags changed:N,Z.
+ |---------------------------------------*/
+ inline unsigned char xor1(unsigned char dst, unsigned char src)
+ {
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ dst ^= src;
+ if (dst == 0) flags |= BIT_Z;
+ if (dst & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned char) dst;
+ }
+
+ inline unsigned short xor2(unsigned short dst, unsigned short src)
+ {
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ dst ^= src;
+ if (dst == 0) flags |= BIT_Z;
+ if (dst & 0x8000) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned short) dst;
+ }
+
+ /*-------------------------------------
+ mov - flags changed:N,Z.
+ |---------------------------------------*/
+ inline unsigned char mov1(unsigned char dst, unsigned char src)
+ {
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ dst = src;
+ if (dst == 0) flags |= BIT_Z;
+ if (dst & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned char) dst;
+ }
+
+ inline unsigned short mov2(unsigned short dst, unsigned short src)
+ {
+ unsigned char flags;
+ flags = get_psw() & ~(BIT_N | BIT_Z); /* clear these bits */
+ dst = src;
+ if (dst == 0) flags |= BIT_Z;
+ if (dst & 0x8000) flags |= BIT_N;
+ set_psw(flags);
+ return (unsigned short) dst;
+ }
+};
#endif
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