Started listing instructions, improved cpu readability of format A a little

4 files changed, 64 insertions, 0 deletions

diff --git a/cpu/instructions/execution_control/call.txt b/cpu/instructions/execution_control/call.txt
new file mode 100644
index 0000000..edec5f1
--- /dev/null
+++ b/cpu/instructions/execution_control/call.txt
@@ -0,0 +1,11 @@
+Number of parameters: 1
+
+Usage:
+	call <target>
+
+Effect:
+	IP pushed to stack
+	IP moved to <target>
+
+Exceptions:
+	None
diff --git a/cpu/instructions/execution_control/call_conditional.txt b/cpu/instructions/execution_control/call_conditional.txt
new file mode 100644
index 0000000..7663e54
--- /dev/null
+++ b/cpu/instructions/execution_control/call_conditional.txt
@@ -0,0 +1,22 @@
+Number of parameters: 2
+
+Usage: call_conditional <type_and_index> <target>
+	type_and_index:
+		Lowest 3 bits: flags for each of the following checked, from lowest to highest:
+			Zero
+			Overflow
+			Carry
+		Next 3 bits:
+			Value for each of the above that it should match
+		Remaining bits:
+			Index into instruction queue for which result is to be compared
+
+Effect:
+	If all of the checked flags match the value to compare to:
+		IP pushed to stack
+		IP moved to <target>
+
+	If no flags are to be checked, it will always set IP
+
+Exceptions:
+	Instruction reference nonexistent
diff --git a/cpu/instructions/execution_control/jump.txt b/cpu/instructions/execution_control/jump.txt
new file mode 100644
index 0000000..6675f03
--- /dev/null
+++ b/cpu/instructions/execution_control/jump.txt
@@ -0,0 +1,10 @@
+Number of parameters: 1
+
+Usage:
+	jump <target>
+
+Effect:
+	Sets IP to <target>
+
+Exceptions:
+	None
diff --git a/cpu/instructions/execution_control/jump_conditional.txt b/cpu/instructions/execution_control/jump_conditional.txt
new file mode 100644
index 0000000..52f323b
--- /dev/null
+++ b/cpu/instructions/execution_control/jump_conditional.txt
@@ -0,0 +1,21 @@
+Number of parameters: 2
+
+Usage: jump_conditional <type_and_index> <target>
+	type_and_index:
+		Lowest 3 bits: flags for each of the following checked, from lowest to highest:
+			Zero
+			Overflow
+			Carry
+		Next 3 bits:
+			Value for each of the above that it should match
+		Remaining bits:
+			Index into instruction queue for which result is to be compared
+
+Effect:
+	If all of the checked flags match the value to compare to:
+		IP moved to <target>
+
+	If no flags are to be checked, it will always set IP
+
+Exceptions:
+	Instruction reference nonexistent