A lot of Plain assembly syntax is experimental and will be reviewed as we move forward. I think it is important to get concept ideas out in the open for discussions – we can always optimize keywords and syntax later. In Distributed Systems we need to synchronizing data between multiple modules and this creates a need for a…
I have so far designed 3 Hat’s that I have produced, and a few others in draft versions. Looking at my older picktures I seem to have uploaded 3D models, but not so many Pictures of the actual Boards – probably lost some Pictures on the old blog – I will fix that. This is…
The system I described in part 2 needs to send a message from a module in device #2 to a module in device #5. This tree is basically the physical address of a resource as seen from RPI1 and RPI2. But, as this address might change with wirings we need a more generic way to…
Our concept of distributed processing is going to need some attention to details in the Assembler/VM design, but it will work. We now have two mechanisms involved: We have an easy way to synchronize data between several modules We can make on module execute logic on a different module. The principles of how we do…
Distributed processing is at the core of what we do in Plain. A module depends on other modules and can use that as part of it’s own logic. A simple function call or an event can connect with a different process that may be local on the same device or located on a different device.…
All code in Plain Assembly is within a module. A module is in effect a process, a stand-alone Plain application that is downloaded to the VM and executed. A module is used by a different module with a use statement use system module mymodule system.println(“Hello World”) end This example re-use the module “system” in “mymodule”.…
I need to start on the assembler soon so this is a good time to summarize the assembly syntax and rules. Plain-Assembly is an assembly language on the same level as a 3rd generation language. It is called an assembler because we maintain one statement one instruction. I deliberately avoid the word compiler because there…
One of my challenges is that our new Object Descriptor have a dynamic size if you take into account the extensions. To deal with this I decided that if E=1 (Extension) we use the Offset as an offset into the dynamic part of the instruction, meaning that every instruction will have a static and one…
All CPU’s, even VM’s have a set of global variables referred to as “Registers”. These are the internal data used to execute instructions. Our VM is no exception, but the registers we need differ from instruction to instruction due to their high level nature. “Registers” in this context is variables in our VM struct. The…
It’s been a few versions of the Object Descriptor and I am not sure this is the last one. I needed to optimize that math table to be more static so I added an entry that will not allow extensions on P1 and P2 since they never will be needed.