- Fixed some bugs in the emulator.

- Started work on implementing the Super VIA emulation.
- Added support for disabling disassembly per
  instruction, when in debug mode.
- Did some more work on rewriting the SuB Suite to
  work with the new calling convention.
- Rewrote the symbol handling code in the emulator's
  assembler, to make it both simpler, and to add
  support for arbitrarily deep symbol scopes.
- Added support for arbitrarily deep local symbol
  scopes.

  For example, to declare a symbol of depth 2, you add
  two '@' characters to the start of the symbol name.

  In other words, the number of '@' characters before
  the symbol name is what determines the scope of that
  symbol.

  And to use a symbol thats outside the current
  scope, you would use the same syntax as using a
  struct member, so you would do `global.local`.

1 files changed, 25 insertions, 0 deletions

diff --git a/supervia.h b/supervia.h
new file mode 100644
index 0000000..8afc45d
--- /dev/null
+++ b/supervia.h
@@ -0,0 +1,25 @@
+
+struct shift_reg {
+	union reg data;	/* Shift Register Data. */
+	uint8_t bits;	/* Serial data for each byte. */
+	uint8_t ocount;	/* Shift out counter. */
+	uint8_t icount;	/* Shift out counter. */
+	uint8_t dir;	/* Data direction for each byte. */
+};
+
+
+struct supervia {
+	union reg pa;		/* Port A. */
+	union reg pb;		/* Port B. */
+	union reg ddra;		/* Port A Data Direction Register. */
+	union reg ddrb;		/* Port B Data Direction Register. */
+	union reg t[4];		/* Timers 1-4. */
+	struct shift_reg sr[4];	/* Shift Registers A-D. */
+	union reg acr;		/* Auxiliary Control Register. */
+	union reg pcr;		/* Peripheral Control Register. */
+	union reg ifr;		/* Interrupt Flags Register. */
+	union reg ier;		/* Interrupt Enable Register. */
+	union reg rng[2];	/* Random Number Generator A, and B. */
+	union reg dac[2];	/* DAC A, and B. */
+	union reg adc[2];	/* ADC A, and B. */
+};