The list of instructions will need to be extended With low level stuff as I mature the VM and implement it, but lets start writing some code and assemble it into actual instruction. I need to do this for every instruction and Assembly trick we use – lets start with IF..ElseIf..Else..End! Ifeg, ifneq, ifgt, ifls, ifgte and…
NOP No Operation. Used for test and to cover the 0 op-code. For FOR Loop Assign Assign operation. Takes an Expression and generate a Math calculation or logical evaluation. While WHILE Loop Loop Generic Loop Exit Terminate a process Raise Raise an event. The same as calling a function without creating a stack Return entry.…
New 3D model showing the right angle connectors and the updated “Servo” that now is renamed to 32 x IO Hat. I have done some mechanical changes and added a lot of protection electronics. As mentioned earlier this is my test ground for the VM and each channel have multiple capabilities – hence the “IO” rather…
I did earlier create named Event’s that could be called with a Raise statement. The last example created an Event digitalIn[2] where the “name” is a declared object register and the event is automatically called if C or PLAIN assembly changes that exact bit. Event digitalIn[2] // … End I like the concept, of…
The previous example used a lot of lines to outline the register mapping and I don’t want to be declaring all this for every app I create. Basically I just want to write something like this: use System use lib32io Assign ch1.chMode = Mode.Servo Assign ch2.chMode = Mode.DigitalIn Assign ch3.chMode = Mode.DigitalIn Event digitalIn[2] …
I decided to use the 32 x IO (Servo, Analogue, Digital) as my test ground for the VM – the firmware will in this case include easyIPC (SPI in this case) and a 32 channel programmable IO controller. Each of the channels have capabilities like: Servo with a 14 bit pulse resolution. PWM out with…
Two new PCB’s arrived. The large green is another Hat – the 8xDC Motor Driver. The small red one is the STM32F030F4 breakout. I am using www.Elecrow.com on all my PCB’s because they have proven to be very reliable. I ordered 10 of these small PCB’s and well – the bag contains 40 – and…
Wrapping up the VM I question some of the instructions so I reviewed the list once more. I will needed to add more of the If instructions back. I will probably also need to add bit operators later – I actually need to wrap up the VM and Write some actual code to see if…
We have so far demonstrated PLAIN Assembly with little difference to an actual 3.gen language. We will see the low-level assembly – instruction by instruction – a bit more as we dig into math and expressions. As we are an assembler we need to maintain a principle of 1:1 between code and actual instructions. The…
PLAIN VM consist of multiple Modules. A Module have it’s own unique name, easyIPC Object map, Stack and can execute independently from other Modules. One Module can interact with other Modules or call them on blocking/non-blocking schemes. All code in PLAIN Assembly must be part of a module and a module start execution with the first…