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instr_ed.c
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instr_ed.c
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/*
* Z80SIM - a Z80-CPU simulator
*
* Copyright (C) 1987-2008 by Udo Munk
*
* History:
* 28-SEP-87 Development on TARGON/35 with AT&T Unix System V.3
* 11-JAN-89 Release 1.1
* 08-FEB-89 Release 1.2
* 13-MAR-89 Release 1.3
* 09-FEB-90 Release 1.4 Ported to TARGON/31 M10/30
* 20-DEC-90 Release 1.5 Ported to COHERENT 3.0
* 10-JUN-92 Release 1.6 long casting problem solved with COHERENT 3.2
* and some optimization
* 25-JUN-92 Release 1.7 comments in english and ported to COHERENT 4.0
* 02-OCT-06 Release 1.8 modified to compile on modern POSIX OS's
* 18-NOV-06 Release 1.9 modified to work with CP/M sources
* 08-DEC-06 Release 1.10 modified MMU for working with CP/NET
* 17-DEC-06 Release 1.11 TCP/IP sockets for CP/NET
* 25-DEC-06 Release 1.12 CPU speed option
* 19-FEB-07 Release 1.13 various improvements
* 06-OCT-07 Release 1.14 bug fixes and improvements
* 06-AUG-08 Release 1.15 many improvements and Windows support via Cygwin
* 25-AUG-08 Release 1.16 console status I/O loop detection and line discipline
* 20-OCT-08 Release 1.17 frontpanel integrated and Altair/IMSAI emulations
*/
/*
* Like the function "cpu()" this one emulates multi byte opcodes
* starting with 0xed
*/
#include "config.h"
#include "global.h"
#ifdef FRONTPANEL
#include "../../frontpanel/frontpanel.h"
#endif
static int trap_ed(void);
static int op_im0(void), op_im1(void), op_im2(void);
static int op_reti(void), op_retn(void);
static int op_neg(void);
static int op_inaic(void), op_inbic(void), op_incic(void);
static int op_indic(void), op_ineic(void);
static int op_inhic(void), op_inlic(void);
static int op_outca(void), op_outcb(void), op_outcc(void);
static int op_outcd(void), op_outce(void);
static int op_outch(void), op_outcl(void);
static int op_ini(void), op_inir(void), op_ind(void), op_indr(void);
static int op_outi(void), op_otir(void), op_outd(void), op_otdr(void);
static int op_ldai(void), op_ldar(void), op_ldia(void), op_ldra(void);
static int op_ldbcinn(void), op_lddeinn(void), op_ldspinn(void);
static int op_ldinbc(void), op_ldinde(void), op_ldinsp(void);
static int op_adchb(void), op_adchd(void), op_adchh(void), op_adchs(void);
static int op_sbchb(void), op_sbchd(void), op_sbchh(void), op_sbchs(void);
static int op_ldi(void), op_ldir(void), op_ldd(void), op_lddr(void);
static int op_cpi(void), op_cpir(void), op_cpdop(void), op_cpdr(void);
static int op_oprld(void), op_oprrd(void);
int op_ed_handel(void)
{
register int t;
static int (*op_ed[256]) (void) = {
trap_ed, /* 0x00 */
trap_ed, /* 0x01 */
trap_ed, /* 0x02 */
trap_ed, /* 0x03 */
trap_ed, /* 0x04 */
trap_ed, /* 0x05 */
trap_ed, /* 0x06 */
trap_ed, /* 0x07 */
trap_ed, /* 0x08 */
trap_ed, /* 0x09 */
trap_ed, /* 0x0a */
trap_ed, /* 0x0b */
trap_ed, /* 0x0c */
trap_ed, /* 0x0d */
trap_ed, /* 0x0e */
trap_ed, /* 0x0f */
trap_ed, /* 0x10 */
trap_ed, /* 0x11 */
trap_ed, /* 0x12 */
trap_ed, /* 0x13 */
trap_ed, /* 0x14 */
trap_ed, /* 0x15 */
trap_ed, /* 0x16 */
trap_ed, /* 0x17 */
trap_ed, /* 0x18 */
trap_ed, /* 0x19 */
trap_ed, /* 0x1a */
trap_ed, /* 0x1b */
trap_ed, /* 0x1c */
trap_ed, /* 0x1d */
trap_ed, /* 0x1e */
trap_ed, /* 0x1f */
trap_ed, /* 0x20 */
trap_ed, /* 0x21 */
trap_ed, /* 0x22 */
trap_ed, /* 0x23 */
trap_ed, /* 0x24 */
trap_ed, /* 0x25 */
trap_ed, /* 0x26 */
trap_ed, /* 0x27 */
trap_ed, /* 0x28 */
trap_ed, /* 0x29 */
trap_ed, /* 0x2a */
trap_ed, /* 0x2b */
trap_ed, /* 0x2c */
trap_ed, /* 0x2d */
trap_ed, /* 0x2e */
trap_ed, /* 0x2f */
trap_ed, /* 0x30 */
trap_ed, /* 0x31 */
trap_ed, /* 0x32 */
trap_ed, /* 0x33 */
trap_ed, /* 0x34 */
trap_ed, /* 0x35 */
trap_ed, /* 0x36 */
trap_ed, /* 0x37 */
trap_ed, /* 0x38 */
trap_ed, /* 0x39 */
trap_ed, /* 0x3a */
trap_ed, /* 0x3b */
trap_ed, /* 0x3c */
trap_ed, /* 0x3d */
trap_ed, /* 0x3e */
trap_ed, /* 0x3f */
op_inbic, /* 0x40 */
op_outcb, /* 0x41 */
op_sbchb, /* 0x42 */
op_ldinbc, /* 0x43 */
op_neg, /* 0x44 */
op_retn, /* 0x45 */
op_im0, /* 0x46 */
op_ldia, /* 0x47 */
op_incic, /* 0x48 */
op_outcc, /* 0x49 */
op_adchb, /* 0x4a */
op_ldbcinn, /* 0x4b */
trap_ed, /* 0x4c */
op_reti, /* 0x4d */
trap_ed, /* 0x4e */
op_ldra, /* 0x4f */
op_indic, /* 0x50 */
op_outcd, /* 0x51 */
op_sbchd, /* 0x52 */
op_ldinde, /* 0x53 */
trap_ed, /* 0x54 */
trap_ed, /* 0x55 */
op_im1, /* 0x56 */
op_ldai, /* 0x57 */
op_ineic, /* 0x58 */
op_outce, /* 0x59 */
op_adchd, /* 0x5a */
op_lddeinn, /* 0x5b */
trap_ed, /* 0x5c */
trap_ed, /* 0x5d */
op_im2, /* 0x5e */
op_ldar, /* 0x5f */
op_inhic, /* 0x60 */
op_outch, /* 0x61 */
op_sbchh, /* 0x62 */
trap_ed, /* 0x63 */
trap_ed, /* 0x64 */
trap_ed, /* 0x65 */
trap_ed, /* 0x66 */
op_oprrd, /* 0x67 */
op_inlic, /* 0x68 */
op_outcl, /* 0x69 */
op_adchh, /* 0x6a */
trap_ed, /* 0x6b */
trap_ed, /* 0x6c */
trap_ed, /* 0x6d */
trap_ed, /* 0x6e */
op_oprld, /* 0x6f */
trap_ed, /* 0x70 */
trap_ed, /* 0x71 */
op_sbchs, /* 0x72 */
op_ldinsp, /* 0x73 */
trap_ed, /* 0x74 */
trap_ed, /* 0x75 */
trap_ed, /* 0x76 */
trap_ed, /* 0x77 */
op_inaic, /* 0x78 */
op_outca, /* 0x79 */
op_adchs, /* 0x7a */
op_ldspinn, /* 0x7b */
trap_ed, /* 0x7c */
trap_ed, /* 0x7d */
trap_ed, /* 0x7e */
trap_ed, /* 0x7f */
trap_ed, /* 0x80 */
trap_ed, /* 0x81 */
trap_ed, /* 0x82 */
trap_ed, /* 0x83 */
trap_ed, /* 0x84 */
trap_ed, /* 0x85 */
trap_ed, /* 0x86 */
trap_ed, /* 0x87 */
trap_ed, /* 0x88 */
trap_ed, /* 0x89 */
trap_ed, /* 0x8a */
trap_ed, /* 0x8b */
trap_ed, /* 0x8c */
trap_ed, /* 0x8d */
trap_ed, /* 0x8e */
trap_ed, /* 0x8f */
trap_ed, /* 0x90 */
trap_ed, /* 0x91 */
trap_ed, /* 0x92 */
trap_ed, /* 0x93 */
trap_ed, /* 0x94 */
trap_ed, /* 0x95 */
trap_ed, /* 0x96 */
trap_ed, /* 0x97 */
trap_ed, /* 0x98 */
trap_ed, /* 0x99 */
trap_ed, /* 0x9a */
trap_ed, /* 0x9b */
trap_ed, /* 0x9c */
trap_ed, /* 0x9d */
trap_ed, /* 0x9e */
trap_ed, /* 0x9f */
op_ldi, /* 0xa0 */
op_cpi, /* 0xa1 */
op_ini, /* 0xa2 */
op_outi, /* 0xa3 */
trap_ed, /* 0xa4 */
trap_ed, /* 0xa5 */
trap_ed, /* 0xa6 */
trap_ed, /* 0xa7 */
op_ldd, /* 0xa8 */
op_cpdop, /* 0xa9 */
op_ind, /* 0xaa */
op_outd, /* 0xab */
trap_ed, /* 0xac */
trap_ed, /* 0xad */
trap_ed, /* 0xae */
trap_ed, /* 0xaf */
op_ldir, /* 0xb0 */
op_cpir, /* 0xb1 */
op_inir, /* 0xb2 */
op_otir, /* 0xb3 */
trap_ed, /* 0xb4 */
trap_ed, /* 0xb5 */
trap_ed, /* 0xb6 */
trap_ed, /* 0xb7 */
op_lddr, /* 0xb8 */
op_cpdr, /* 0xb9 */
op_indr, /* 0xba */
op_otdr, /* 0xbb */
trap_ed, /* 0xbc */
trap_ed, /* 0xbd */
trap_ed, /* 0xbe */
trap_ed, /* 0xbf */
trap_ed, /* 0xc0 */
trap_ed, /* 0xc1 */
trap_ed, /* 0xc2 */
trap_ed, /* 0xc3 */
trap_ed, /* 0xc4 */
trap_ed, /* 0xc5 */
trap_ed, /* 0xc6 */
trap_ed, /* 0xc7 */
trap_ed, /* 0xc8 */
trap_ed, /* 0xc9 */
trap_ed, /* 0xca */
trap_ed, /* 0xcb */
trap_ed, /* 0xcc */
trap_ed, /* 0xcd */
trap_ed, /* 0xce */
trap_ed, /* 0xcf */
trap_ed, /* 0xd0 */
trap_ed, /* 0xd1 */
trap_ed, /* 0xd2 */
trap_ed, /* 0xd3 */
trap_ed, /* 0xd4 */
trap_ed, /* 0xd5 */
trap_ed, /* 0xd6 */
trap_ed, /* 0xd7 */
trap_ed, /* 0xd8 */
trap_ed, /* 0xd9 */
trap_ed, /* 0xda */
trap_ed, /* 0xdb */
trap_ed, /* 0xdc */
trap_ed, /* 0xdd */
trap_ed, /* 0xde */
trap_ed, /* 0xdf */
trap_ed, /* 0xe0 */
trap_ed, /* 0xe1 */
trap_ed, /* 0xe2 */
trap_ed, /* 0xe3 */
trap_ed, /* 0xe4 */
trap_ed, /* 0xe5 */
trap_ed, /* 0xe6 */
trap_ed, /* 0xe7 */
trap_ed, /* 0xe8 */
trap_ed, /* 0xe9 */
trap_ed, /* 0xea */
trap_ed, /* 0xeb */
trap_ed, /* 0xec */
trap_ed, /* 0xed */
trap_ed, /* 0xee */
trap_ed, /* 0xef */
trap_ed, /* 0xf0 */
trap_ed, /* 0xf1 */
trap_ed, /* 0xf2 */
trap_ed, /* 0xf3 */
trap_ed, /* 0xf4 */
trap_ed, /* 0xf5 */
trap_ed, /* 0xf6 */
trap_ed, /* 0xf7 */
trap_ed, /* 0xf8 */
trap_ed, /* 0xf9 */
trap_ed, /* 0xfa */
trap_ed, /* 0xfb */
trap_ed, /* 0xfc */
trap_ed, /* 0xfd */
trap_ed, /* 0xfe */
trap_ed /* 0xff */
};
#ifdef WANT_TIM
t = (*op_ed[*PC++]) (); /* execute next opcode */
#else
(*op_ed[*PC++]) ();
#endif
#ifdef WANT_PCC
if (PC > ram + 65535) /* correct PC overrun */
PC = ram;
#endif
return(t);
}
/*
* This function traps all illegal opcodes following the
* initial 0xed of a multi byte opcode.
*/
static int trap_ed(void)
{
cpu_error = OPTRAP2;
cpu_state = STOPPED;
return(0);
}
static int op_im0(void) /* IM 0 */
{
int_mode = 0;
return(8);
}
static int op_im1(void) /* IM 1 */
{
int_mode = 1;
return(8);
}
static int op_im2(void) /* IM 2 */
{
int_mode = 2;
return(8);
}
static int op_reti(void) /* RETI */
{
register unsigned i;
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_STACK | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
i = *STACK++;
#ifdef WANT_SPC
if (STACK >= ram + 65536L)
STACK = ram;
#endif
i += *STACK++ << 8;
#ifdef WANT_SPC
if (STACK >= ram + 65536L)
STACK = ram;
#endif
PC = ram + i;
return(14);
}
static int op_retn(void) /* RETN */
{
register unsigned i;
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_STACK | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
i = *STACK++;
#ifdef WANT_SPC
if (STACK >= ram + 65536L)
STACK = ram;
#endif
i += *STACK++ << 8;
#ifdef WANT_SPC
if (STACK >= ram + 65536L)
STACK = ram;
#endif
PC = ram + i;
if (IFF & 2)
IFF |= 1;
return(14);
}
static int op_neg(void) /* NEG */
{
(A) ? (F |= C_FLAG) : (F &= ~C_FLAG);
(A == 0x80) ? (F |= P_FLAG) : (F &= ~P_FLAG);
(0 - ((signed char) A & 0xf) < 0) ? (F |= H_FLAG) : (F &= ~H_FLAG);
A = 0 - A;
F |= N_FLAG;
(A) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(A & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
return(8);
}
static int op_inaic(void) /* IN A,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
A = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(A) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(A & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[A]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_inbic(void) /* IN B,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
B = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(B) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(B & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[B]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_incic(void) /* IN C,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
C = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(C) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(C & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[C]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_indic(void) /* IN D,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
D = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(D) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(D & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[D]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_ineic(void) /* IN E,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
E = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(E) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(E & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[E]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_inhic(void) /* IN H,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
H = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(H) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(H & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[H]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_inlic(void) /* IN L,(C) */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
L = io_in(C);
F &= ~(N_FLAG | H_FLAG);
(L) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(L & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
(parrity[L]) ? (F &= ~P_FLAG) : (F |= P_FLAG);
return(12);
}
static int op_outca(void) /* OUT (C),A */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, A);
return(12);
}
static int op_outcb(void) /* OUT (C),B */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, B);
return(12);
}
static int op_outcc(void) /* OUT (C),C */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, C);
return(12);
}
static int op_outcd(void) /* OUT (C),D */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, D);
return(12);
}
static int op_outce(void) /* OUT (C),E */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, E);
return(12);
}
static int op_outch(void) /* OUT (C),H */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, H);
return(12);
}
static int op_outcl(void) /* OUT (C),L */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, L);
return(12);
}
static int op_ini(void) /* INI */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
*(ram + (H << 8) + L) = io_in(C);
#ifdef BUS_8080
cpu_bus = 0;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
L++;
if (!L)
H++;
B--;
F |= N_FLAG;
(B) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
return(16);
}
static int op_inir(void) /* INIR */
{
register int t = -21;
register BYTE *d;
BYTE io_in();
d = ram + (H << 8) + L;
do {
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
*d++ = io_in(C);
#ifdef BUS_8080
cpu_bus = 0;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
B--;
t += 21;
} while (B);
H = (d - ram) >> 8;
L = d - ram;
F |= N_FLAG | Z_FLAG;
return(t + 16);
}
static int op_ind(void) /* IND */
{
BYTE io_in();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
*(ram + (H << 8) + L) = io_in(C);
#ifdef BUS_8080
cpu_bus = 0;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
L--;
if (L == 0xff)
H--;
B--;
F |= N_FLAG;
(B) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
return(16);
}
static int op_indr(void) /* INDR */
{
register int t = -21;
register BYTE *d;
BYTE io_in();
d = ram + (H << 8) + L;
do {
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_INP;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
*d-- = io_in(C);
#ifdef BUS_8080
cpu_bus = 0;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
B--;
t += 21;
} while (B);
H = (d - ram) >> 8;
L = d - ram;
F |= N_FLAG | Z_FLAG;
return(t + 16);
}
static int op_outi(void) /* OUTI */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, *(ram + (H << 8) * L));
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
L++;
if (!L)
H++;
B--;
F |= N_FLAG;
(B) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
return(16);
}
static int op_otir(void) /* OTIR */
{
register int t = -21;
register BYTE *d;
BYTE io_out();
d = ram + (H << 8) + L;
do {
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, *d++);
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
B--;
t += 21;
} while (B);
H = (d - ram) >> 8;
L = d - ram;
F |= N_FLAG | Z_FLAG;
return(t + 16);
}
static int op_outd(void) /* OUTD */
{
BYTE io_out();
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, *(ram + (H << 8) * L));
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
L--;
if (L == 0xff)
H--;
B--;
F |= N_FLAG;
(B) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
return(16);
}
static int op_otdr(void) /* OTDR */
{
register int t = -21;
register BYTE *d;
BYTE io_out();
d = ram + (H << 8) + L;
do {
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
io_out(C, *d--);
#ifdef BUS_8080
cpu_bus = CPU_OUT;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
B--;
t += 21;
} while (B);
H = (d - ram) >> 8;
L = d - ram;
F |= N_FLAG | Z_FLAG;
return(t + 16);
}
static int op_ldai(void) /* LD A,I */
{
A = I;
F &= ~(N_FLAG | H_FLAG);
(IFF & 2) ? (F |= P_FLAG) : (F &= ~P_FLAG);
(A) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(A & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
return(9);
}
static int op_ldar(void) /* LD A,R */
{
A = (BYTE) R;
F &= ~(N_FLAG | H_FLAG);
(IFF & 2) ? (F |= P_FLAG) : (F &= ~P_FLAG);
(A) ? (F &= ~Z_FLAG) : (F |= Z_FLAG);
(A & 128) ? (F |= S_FLAG) : (F &= ~S_FLAG);
return(9);
}
static int op_ldia(void) /* LD I,A */
{
I = A;
return(9);
}
static int op_ldra(void) /* LD R,A */
{
R = A;
return(9);
}
static int op_ldbcinn(void) /* LD BC,(nn) */
{
register BYTE *p;
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
p = ram + *PC++;
p += *PC++ << 8;
C = *p++;
B = *p;
return(20);
}
static int op_lddeinn(void) /* LD DE,(nn) */
{
register BYTE *p;
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
p = ram + *PC++;
p += *PC++ << 8;
E = *p++;
D = *p;
return(20);
}
static int op_ldspinn(void) /* LD SP,(nn) */
{
register BYTE *p;
#ifdef BUS_8080
cpu_bus = CPU_WO | CPU_MEMR;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
p = ram + *PC++;
p += *PC++ << 8;
STACK = ram + *p++;
STACK += *p << 8;
return(20);
}
static int op_ldinbc(void) /* LD (nn),BC */
{
register BYTE *p;
#ifdef BUS_8080
cpu_bus = 0;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
p = ram + *PC++;
p += *PC++ << 8;
*p++ = C;
*p = B;
return(20);
}
static int op_ldinde(void) /* LD (nn),DE */
{
register BYTE *p;
#ifdef BUS_8080
cpu_bus = 0;
#endif
#ifdef FRONTPANEL
fp_sampleLightGroup(0, 0);
#endif
p = ram + *PC++;
p += *PC++ << 8;
*p++ = E;
*p = D;
return(20);
}
static int op_ldinsp(void) /* LD (nn),SP */
{
register BYTE *p;
register int i;
#ifdef BUS_8080
cpu_bus = 0;