Yikes, lots of opcodes documented. #2

doc/kasm/writing.md

@@ -93,5 +93,4 @@ itself and emit the results in the binary.  All numbers are supported, with radi
 also be dereferenced.  Kasm cannot (and probably will not) dereference a number intended to be loaded from a memory
 address or register.  Attempting to do may result in undefined behavior.
 
-[^1]: Kasm's numberizer uses [Integer.valueOf(String s, int radix)]
-(ttp://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#valueOf-java.lang.String-int-)
+[^1]: Kasm's numberizer uses [Integer.valueOf(String s, int radix)](http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#valueOf-java.lang.String-int-)

doc/kcpu/opcodes.md

@@ -116,41 +116,247 @@ The Kcpu currently has a very limited instruction set.  For the numerical values
 # Instruction Information
 
 ## `add`
+```
+add output input
+```
+Adds the values of both `input` and `output`, then places the result in `output`.
+
 ## `call`
+```
+call address
+```
+Places the current program counter onto the call stack, then jumps to the specified address.
+
 ## `deva`
-## `devb`
+```
+deva address
+```
+If there is a device at the specified memory address, its port number will be placed in `r0`.  If there is no device,
+the value `0x7f` will be placed in `r0`.
+
+## `devd`
+```
+devd port
+```
+Detaches the device on the specified port from the memory bus.  Does nothing if the device is already detached.
+
 ## `devm`
+```
+devm port newaddress
+```
+Relocates device on the specified port to the specified base address.  Use with caution, as there is nothing to prevent
+multiple devices from sharing the same memory address range.
+
 ## `devp`
+```
+devp port
+```
+Obtains information on the device on the specified port:
+
+* `r0` will contain the device's base address
+* `r1` will contain the length of the devices's address range.
+
 ## `div`
+```
+div numerator denominator
+```
+Divides the numerator against the denominator:
+
+* `r0` will contain the quotient
+* `r1` will contain the remainder
+
 ## `gpc`
+```
+gpc the current program counter in `r0`
+
 ## `iret`
+```
+iret from an interrupt state.  Does nothing if the processor is not currently in an interrupt state.
+
 ## `irqd`
+```
+irqd port
+```
+Sends an interrupt to the device on the specified port.  This is a non-blocking instruction.
+For the blocking equivalent, see [`irqdh`](#irqdh)
+
 ## `irqdh`
+```
+irqdh port
+```
+Sends an interrupt to the device on the specified port.  This is a blocking instruction - the processor will wait until
+the hardware finishes its task.
+
 ## `irqm`
+```
+irqm address
+```
+Sends an interrupt to the device using the specified memory address.  This is a non-blocking instruction.
+For the blocking equivalent, see [`irqmh`](#irqmh)
+
 ## `irqmh`
+```
+irqmh address
+```
+Sends an interrupt to the device using the specified memory address.  This is a blocking instruction - the processor
+will wait until the hardware finishes its task.
+
 ## `ivec`
+```
+ivec interrupt address
+```
+Sets the specified address as the interrupt handler (vector) for the specified interrupt value.
+
 ## `jae`
+```
+jae number0 number1 address
+```
+Jumps to address if number0 is equal to number1.
+
 ## `jag`
+```
+jag number0 number1 address
+```
+Jumps to address if number0 is greater than number1.
+
 ## `jage`
+```
+jage number0 number1 address
+```
+Jumps to address if number0 is greater than or equal to number1.
+
 ## `jal`
+```
+jal number0 number1 address
+```
+Jumps to address if number0 is less than number1.
+
 ## `jale`
+```
+jale number0 number1 address
+```
+Jumps to address if number0 is less than or equal to number1.
+
 ## `jde`
+```
+jde number0 number1 address
+```
+Jumps down if number0 is equal to number1.
+
 ## `jdg`
+```
+jdg number0 number1 address
+```
+Jumps down if number0 is greater than number1.
+
 ## `jdge`
+```
+jdge number0 number1 address
+```
+Jumps down if number0 is greater than or equal to number1.
 ## `jdl`
+```
+jdl number0 number1 address
+```
+Jumps down if number0 is less than number1.
+
 ## `jdle`
+```
+jdle number0 number1 address
+```
+Jumps down if number0 is less than or equal to number1.
+
 ## `jmpa`
+```
+jmpa address
+```
+Jumps to address.
+
 ## `jmpd`
+```
+jmpd address
+```
+Jumps down.
+
 ## `jmpu`
+```
+jmpu address
+```
+Jumps up.
+
 ## `jue`
+```
+jue number0 number1 address
+```
+Jumps up if number0 is equal to number1.
+
 ## `jug`
+```
+jug number0 number1 address
+```
+Jumps up if number0 is greater than number1.
+
 ## `juge`
+```
+juge number0 number1 address
+```
+Jumps up if number0 is greater than or equal to number1.
+
 ## `jul`
+```
+jul number0 number1 address
+```
+Jumps up if number0 is less than number1.
+
 ## `jule`
+```
+jule number0 number1 address
+```
+Jumps up if number0 is less than or equal to number1.
+
 ## `mul`
+```
+mul output input
+```
+Multiplies the values of both `input` and `output`, then places the result in `output`.
+
 ## `pop`
+```
+pop
+```
+Takes the topmost value from the stack and moves it to `r0`.
+
 ## `push`
+```
+push value
+```
+Places the specified value at the top of the stack.
+
 ## `ret`
+```
+ret
+```
+Returns from a function.  Does nothing if the call stack is empty.
+
 ## `sub`
+```
+sub output input
+```
+Subtracts the value `output` from the value of `input`, then places the result in `output`.
+
 ## `vcmp`
+```
+vcmp number0 number1
+```
+Performs 4 comparisons between number0 and number1, then puts the result in `r0`.  The resulting value is a bitmask.
+
+* `number0 != number1` : `0x01`
+* `number0 >= number1` : `0x02`
+* `number0 == number1` : `0x04`
+* `number0 <= number1` : `0x08`
+
 ## `zpwr`
+```
+zpwr
+```
+Turns the system off.