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-rw-r--r--doc/casm.html6
-rwxr-xr-x[-rw-r--r--]src/65c816.c246
-rw-r--r--src/casm.c9
-rwxr-xr-x[-rw-r--r--]src/parse.c4
-rw-r--r--src/test/bank3
5 files changed, 196 insertions, 72 deletions
diff --git a/doc/casm.html b/doc/casm.html
index 0606a34..7bcc540 100644
--- a/doc/casm.html
+++ b/doc/casm.html
@@ -292,8 +292,10 @@ org <i>value</i>[, <i>bank</i>]
</td>
<td class="def">
Sets the program counter (PC) to <i>value</i>. The PC defaults to zero on
-initialisation. If the optional second argument is passed the current memory
-bank in use is set to <i>bank</i>.
+initialisation. If the optional second argument is passed the current memory
+bank in use is set to <i>bank</i>. Note that it also possible to set the
+bank by passing a 24-bit address. This was added for convenience when using the
+65c618 processor.
</td></tr>
<tr><td class="cmd">
diff --git a/src/65c816.c b/src/65c816.c
index 0fbf8bc..d6473a8 100644..100755
--- a/src/65c816.c
+++ b/src/65c816.c
@@ -37,6 +37,24 @@
/* ---------------------------------------- TYPES AND GLOBALS
*/
+enum option_t
+{
+ OPT_A16,
+ OPT_I16
+};
+
+static const ValueTable options[] =
+{
+ {"a16", OPT_A16},
+ {"i16", OPT_I16},
+ {NULL}
+};
+
+static struct
+{
+ int a16;
+ int i16;
+} option;
/* Note some addressing modes are indistinguable and will never be returned,
for example STACK_IMMEDIATE or STACK_PC_LONG. They are kept here as a
@@ -207,6 +225,50 @@ static void CalcAddressMode(int argc, char *argv[], int quoted[],
}
+ /* Absolute Indirect
+ */
+ if (argc == 1 && quoted[1] == '(')
+ {
+ if (!ExprEval(argv[1], address))
+ {
+ snprintf(err, errsize, "%s: expression error: %s",
+ argv[1], ExprError());
+ *mode = ADDR_MODE_ERROR;
+ return;
+ }
+
+ CMD_RANGE_ADDR_MODE(mode,
+ DIRECT_PAGE_INDIRECT,
+ ABSOLUTE_INDIRECT,
+ ADDR_MODE_ERROR,
+ address);
+
+ return;
+ }
+
+
+ /* Absolute Indirect Long
+ */
+ if (argc == 1 && quoted[1] == '[')
+ {
+ if (!ExprEval(argv[1], address))
+ {
+ snprintf(err, errsize, "%s: expression error: %s",
+ argv[1], ExprError());
+ *mode = ADDR_MODE_ERROR;
+ return;
+ }
+
+ CMD_RANGE_ADDR_MODE(mode,
+ DIRECT_PAGE_INDIRECT_LONG,
+ ABSOLUTE_INDIRECT_LONG,
+ ADDR_MODE_ERROR,
+ address);
+
+ return;
+ }
+
+
/* Absolute,[XY]
*/
if (argc == 3 && !quoted[1])
@@ -331,54 +393,61 @@ static void CalcAddressMode(int argc, char *argv[], int quoted[],
/* ---------------------------------------- COMMAND HANDLERS
*/
-static CommandStatus DUMMY(const char *label, int argc, char *argv[],
- int quoted[], char *err, size_t errsize)
+static CommandStatus MX8_16(const char *label, int argc, char *argv[],
+ int quoted[], char *err, size_t errsize)
{
- address_mode_t mode;
- int address;
-
- CMD_ADDRESS_MODE(mode, address);
-
- switch(mode)
+ if (argc == 1)
{
- case ACCUMULATOR:
- return CMD_OK;
-
- case IMPLIED:
- return CMD_OK;
-
- case IMMEDIATE:
+ if (CompareString(argv[0], "M8") || CompareString(argv[0], ".M8"))
+ {
+ option.a16 = FALSE;
return CMD_OK;
-
- case ABSOLUTE:
+ }
+ else if (CompareString(argv[0], "M16") ||
+ CompareString(argv[0], ".M16"))
+ {
+ option.a16 = TRUE;
return CMD_OK;
-
- case ZERO_PAGE:
+ }
+ else if (CompareString(argv[0], "X8") || CompareString(argv[0], ".X8"))
+ {
+ option.i16 = FALSE;
return CMD_OK;
-
- case ABSOLUTE_INDEX_X:
+ }
+ else if (CompareString(argv[0], "X16") ||
+ CompareString(argv[0], ".X16"))
+ {
+ option.i16 = TRUE;
return CMD_OK;
+ }
+ }
+ else if (argc == 3)
+ {
+ if (CompareString(argv[0], "MX") || CompareString(argv[0], ".MX"))
+ {
+ int asize;
+ int isize;
- case ABSOLUTE_INDEX_Y:
- return CMD_OK;
+ CMD_EXPR(argv[1], asize);
+ CMD_EXPR(argv[2], isize);
- case ZERO_PAGE_INDEX_X:
- return CMD_OK;
+ if ((asize !=8 && asize != 8) || (isize != 8 && isize != 16))
+ {
+ snprintf(err, errsize, "%s: unsupported regsiter sizes %s,%s",
+ argv[0], argv[1], argv[2]);
+ return CMD_FAILED;
+ }
- case ZERO_PAGE_INDEX_Y:
- return CMD_OK;
+ option.a16 = (asize == 16);
+ option.i16 = (isize == 16);
- case ZERO_PAGE_INDIRECT_X:
return CMD_OK;
+ }
+ }
- case ZERO_PAGE_INDIRECT_Y:
- return CMD_OK;
+ snprintf(err, errsize, "%s: bad directive", argv[0]);
- default:
- snprintf(err, errsize, "%s: unsupported addressing mode %s",
- argv[0], address_mode_name[mode]);
- return CMD_FAILED;
- }
+ return CMD_FAILED;
}
static CommandStatus ADC(const char *label, int argc, char *argv[],
@@ -1415,10 +1484,22 @@ static const OpcodeTable implied_opcodes[] =
{"NOP", 0xea},
{"TXS", 0x9a},
{"TSX", 0xba},
+
{"PHA", 0x48},
- {"PLA", 0x68},
+ {"PHX", 0xda},
+ {"PHY", 0x5a},
+ {"PHB", 0x8b},
+ {"PHD", 0x0b},
+ {"PHK", 0x4b},
{"PHP", 0x08},
+
+ {"PLA", 0x68},
+ {"PLX", 0xfa},
+ {"PLY", 0x7a},
+ {"PLB", 0xab},
+ {"PLD", 0x2b},
{"PLP", 0x28},
+
{"CLC", 0x18},
{"SEC", 0x38},
{"CLI", 0x58},
@@ -1443,43 +1524,54 @@ static const OpcodeTable implied_opcodes[] =
static const OpcodeTable branch_opcodes[] =
{
- {"BPL", 0x10},
- {"BMI", 0x30},
- {"BVC", 0x50},
- {"BVS", 0x70},
- {"BCC", 0x90},
- {"BCS", 0xB0},
- {"BNE", 0xD0},
- {"BEQ", 0xF0},
+ {"BPL", 0x10},
+ {"BMI", 0x30},
+ {"BVC", 0x50},
+ {"BVS", 0x70},
+ {"BCC", 0x90},
+ {"BCS", 0xB0},
+ {"BNE", 0xD0},
+ {"BEQ", 0xF0},
{NULL}
};
static const HandlerTable handler_table[] =
{
- {"ADC", ADC},
- {"AND", AND},
- {"ASL", ASL},
- {"BIT", BIT},
- {"CMP", CMP},
- {"CPX", CPX},
- {"CPY", CPY},
- {"DEC", DEC},
- {"EOR", EOR},
- {"INC", INC},
- {"JMP", JMP},
- {"JSR", JSR},
- {"LDA", LDA},
- {"LDX", LDX},
- {"LDY", LDY},
- {"LSR", LSR},
- {"ORA", ORA},
- {"ROL", ROL},
- {"ROR", ROR},
- {"SBC", SBC},
- {"STA", STA},
- {"STX", STX},
- {"STY", STY},
+ {"M8", MX8_16},
+ {"M16", MX8_16},
+ {".M8", MX8_16},
+ {".M16", MX8_16},
+ {"X8", MX8_16},
+ {"X16", MX8_16},
+ {".X8", MX8_16},
+ {".X16", MX8_16},
+ {"MX", MX8_16},
+ {".MX", MX8_16},
+
+ {"ADC", ADC},
+ {"AND", AND},
+ {"ASL", ASL},
+ {"BIT", BIT},
+ {"CMP", CMP},
+ {"CPX", CPX},
+ {"CPY", CPY},
+ {"DEC", DEC},
+ {"EOR", EOR},
+ {"INC", INC},
+ {"JMP", JMP},
+ {"JSR", JSR},
+ {"LDA", LDA},
+ {"LDX", LDX},
+ {"LDY", LDY},
+ {"LSR", LSR},
+ {"ORA", ORA},
+ {"ROL", ROL},
+ {"ROR", ROR},
+ {"SBC", SBC},
+ {"STA", STA},
+ {"STX", STX},
+ {"STY", STY},
{NULL}
};
@@ -1491,18 +1583,36 @@ static const HandlerTable handler_table[] =
void Init_65c816(void)
{
+ option.a16 = FALSE;
+ option.i16 = FALSE;
SetNeededPasses(3);
}
const ValueTable *Options_65c816(void)
{
- return NULL;
+ return options;
}
CommandStatus SetOption_65c816(int opt, int argc, char *argv[],
int quoted[], char *err, size_t errsize)
{
+ CMD_ARGC_CHECK(1);
+
+ switch(opt)
+ {
+ case OPT_A16:
+ option.a16 = ParseTrueFalse(argv[0], FALSE);
+ break;
+
+ case OPT_I16:
+ option.i16 = ParseTrueFalse(argv[0], FALSE);
+ break;
+
+ default:
+ break;
+ }
+
return CMD_OK;
}
diff --git a/src/casm.c b/src/casm.c
index 771a7e3..6733ad5 100644
--- a/src/casm.c
+++ b/src/casm.c
@@ -151,6 +151,15 @@ static CommandStatus ORG(const char *label, int argc, char *argv[],
CMD_ARGC_CHECK(2);
CMD_EXPR(argv[1], result);
+ /* See if a bank was added
+ */
+ if (result > 0xffff)
+ {
+ int bank = (result >> 16);
+ SetAddressBank(bank);
+ result &= 0xffff;
+ }
+
SetPC(result);
/* If there was a label, set that as well
diff --git a/src/parse.c b/src/parse.c
index abcd149..38d5f90 100644..100755
--- a/src/parse.c
+++ b/src/parse.c
@@ -111,13 +111,13 @@ int ParseLine(Line *line, const char *source)
static const char *quote_start_chars[2] =
{
"",
- "\"'("
+ "\"'(["
};
static const char *quote_end_chars[2] =
{
"",
- "\"')"
+ "\"')]"
};
const char *p = NULL;
diff --git a/src/test/bank b/src/test/bank
index 6e29010..5b1606b 100644
--- a/src/test/bank
+++ b/src/test/bank
@@ -11,3 +11,6 @@
bank 1
defb 2
+
+ org $078000
+ defb 3
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 23:39:44 +0000