Taar Microprocessor
News
| Nov 15, 2022 | Added the project logo to the project page. | Sameer, Mohammed |
| Sep 19, 2022 | Made changes to enable separate VU sets for user mode and kernel mode. | Sameer, Mohammed |
| Sep 19, 2022 | Expanded the working of the 'copyimm' instruction. | Sameer, Mohammed |
| Sep 14, 2022 | Renamed instruction 'jmptblexec' as 'jmptbl'. | Sameer, Mohammed |
| Sep 14, 2022 | Removed breakpoint registers from IDU and added there two more scratchpad registers. Renamed instruction 'goto' as 'jmp'. | Sameer, Mohammed |
| Sep 13, 2022 | To Molecule system added device type "String search". This device can comprise of many, small, byte comparators running in parallel which will speed up string searches much faster than any processor bound searches. (edited) | Sameer, Mohammed |
| Sep 12, 2022 | Removed instruction 'bytecmp' because I think byte comparison can be done by a combination of bit-shift instructions and bitwise-logic instructions. | Sameer, Mohammed |
| Sep 12, 2022 | Changing the system quite a bit. Brought back the "load / store" system which has effected multiple instructions. Work not finished on this. | Sameer, Mohammed |
| Sep 7, 2022 | In instruction 'setinstcfg' changed names of the first two fields and hence their effect. | Sameer, Mohammed |
| Sep 7, 2022 | Added an address field to the header in the Molecule system. | Sameer, Mohammed |
| Sep 7, 2022 | Set process-private data area to maximum 4 MB. Renamed "Scratchpad Page" as "Call Communications Page". In the Molecule system explained what the four serial lanes are about. (edited) | Sameer, Mohammed |
| Sep 5, 2022 | To Molecule system added Packet Type "4096ByteMessage" and added new packet field "Packet Priority". | Sameer, Mohammed |
| Sep 4, 2022 | Gave the Molecule I/O subsystem its own large section. | Sameer, Mohammed |
| Sep 4, 2022 | Changed the breakpointing system and added the relevant text to the 'loadprocess' instruction. | Sameer, Mohammed |
| Sep 4, 2022 | Renamed instruction 'takelock' as 'takeklock'. | Sameer, Mohammed |
| Sep 3, 2022 | Renamed register 'Process Settings' to 'Process Status'. | Sameer, Mohammed |
| Sep 3, 2022 | Changed the system for the number of vector units to use which has changed the arrangement of the instruction 'setinstcfg'. | Sameer, Mohammed |
| Sep 2, 2022 | Consolidated process partitioning and process capabilities. | Sameer, Mohammed |
| Sep 2, 2022 | Elaborated the section for Partitioning to include memory quotas. | Sameer, Mohammed |
| Sep 2, 2022 | Renamed process descriptor element 'Capabilities Bitmap' to just a simple 'Capabilities'. | Sameer, Mohammed |
| Sep 2, 2022 | Renamed instruction 'countofonebits' to 'getcountofonebits'. Added instruction 'getcountofzerobits'. | Sameer, Mohammed |
| Aug 30, 2022 | In Molecule subsystem consolidated the message types in the field "Packet Data Type", added field "Packet Direction", changed one of the device types and changed the system of the field "Count Of Message Blocks Being Transferred". (edited) | Sameer, Mohammed |
| Aug 29, 2022 | Renamed instruction 'setfromfirstzerobit' to 'setfromzerobit' and changed its working. | Sameer, Mohammed |
| Aug 26, 2022 | In Molecule subsystem added the "Pulse" data transfer type. | Sameer, Mohammed |
| Aug 26, 2022 | In Molecule subsystem, renamed "Data Type" as "Packet Data Type". | Sameer, Mohammed |
| Aug 25, 2022 | Renamed "IEUs" to "Vector Units". | Sameer, Mohammed |
| Aug 24, 2022 | Added capability 'CAP_PROCESS_TIMEOUTS'. (edited) | Sameer, Mohammed |
| Aug 23, 2022 | Added "Client State" values for the kernel call 'channelWaitIO'. | Sameer, Mohammed |
| Aug 23, 2022 | Added details of kernel call 'timerConfigure'. | Sameer, Mohammed |
| Aug 22, 2022 | Removed instruction 'copyimm' from the list of vectorized instructions because the IEUs do not actually themselves copy to memory. | Sameer, Mohammed |
| Aug 22, 2022 | Added field "do not update loop counter" to instruction 'setinstcfg'. | Sameer, Mohammed |
| Aug 20, 2022 | Changed in "Data Type" field of Molecule subsystem. | Sameer, Mohammed |
| Aug 19, 2022 | Made instruction 'setinstcfg' to be 128 bits long ( 16 bytes ) instead of the previous 136 bits. | Sameer, Mohammed |
| Aug 19, 2022 | Renamed "Guarded Code" to "Serialized Code". | Sameer, Mohammed |
| Aug 14, 2022 | Elaborated the Molecule subsystem. | Sameer, Mohammed |
| Aug 14, 2022 | Added "Data / Program RAM interconnect" as one of the device types of Molecule thus making memory and I/O accessed through a common interface. (edited) | Sameer, Mohammed |
| Aug 14, 2022 | Added "Assistant Kosmos SoC" to the device types in the Molecule subsystem. | Sameer, Mohammed |
| Aug 13, 2022 | In description of Molecule subsystem, bifurcated the header description from the values it will carry. | Sameer, Mohammed |
| Aug 3, 2022 | Renamed the incomplete "GPIO" device connection system as "Molecule" and elaborated it. | Sameer, Mohammed |
| Aug 2, 2022 | Increased the count of GPIO pairs so that multiplexing is mostly avoided. | Sameer, Mohammed |
| Aug 1, 2022 | Added elements in process descriptor for Guarded Code concept. | Sameer, Mohammed |
| Aug 1, 2022 | Replaced one of the three cameras in the SoC with one low-power short-range Lidar. | Sameer, Mohammed |
| Jul 31, 2022 | Renamed "Transactional Code" to "Guarded Code" to avoid confusion with channel transactions. | Sameer, Mohammed |
| Jul 31, 2022 | Renamed some "Capabilities" and the channel types are now three. | Sameer, Mohammed |
| Jul 29, 2022 | Added Capability 'CAP_PROCESS_USE_GOTO'. | Sameer, Mohammed |
| Jul 28, 2022 | Removed support for Mutexes and added a section for Transactional Code that is to be elaborated soon. | Sameer, Mohammed |
| Jul 28, 2022 | In IDU added register 'Main Process' Descriptor Address'. (edited) | Sameer, Mohammed |
| Jul 27, 2022 | Replaced instruction 'memcmp' with the more general 'bytecmp'. | Sameer, Mohammed |
| Jul 27, 2022 | Changed maximum number of IEUs from 64 to 32. Removed addresses from IEUs. | Sameer, Mohammed |
| Jul 26, 2022 | Added some text about memory stacking, triple redundancy of the SoC and clock-less-ness of instruction execution. | Sameer, Mohammed |
| Jul 26, 2022 | There is now only one page directory info in the process descriptor. | Sameer, Mohammed |
| Jul 25, 2022 | Breakpoint setting in register 'Process Settings' trifurcated into one bit for breakpoint triggered at every instruction, one bit for trigger at specific instruction, one bit for trigger at specific datum access ( read or write ). | Sameer, Mohammed |
| Jul 24, 2022 | Removed integer versions of instructions 'add', 'sub' and 'mul'. | Sameer, Mohammed |
| Jul 24, 2022 | Added instruction 'memcmp' and removed instruction 'swintr'. | Sameer, Mohammed |
| Jul 23, 2022 | Removed bit 'If Super Access Process' from Process Settings register because of the existence of Capabilities system. | Sameer, Mohammed |
| Jul 21, 2022 | Did cleaning up of instructions 'takelock' and 'jmptblexec'. Made max number of computation units to be 64. | Sameer, Mohammed |
| Jul 21, 2022 | Greatly modified the IPC and Mutex kernel calls. | Sameer, Mohammed |
| Jul 20, 2022 | Beginning to change channel I/O IPC back to the old-style client-server model because the client requests are automatically serialized. | Sameer, Mohammed |
| Jul 20, 2022 | Renamed "Call communications page" to a more general "Scratchpad page". Beginning to changing instruction 'takelock'. | Sameer, Mohammed |
| Jul 20, 2022 | Made instruction 'takelock' a general purpose instruction callable by kernel code and user-mode code. | Sameer, Mohammed |
| Jul 20, 2022 | Added fields 'Current Page Directory Page Number' and 'Original Page Directory Page Number' to the process descriptor. Added kernel call 'channelTriggerInterrupt' | Sameer, Mohammed |
| Jul 20, 2022 | Added instruction 'swintr'. | Sameer, Mohammed |
| Jul 19, 2022 | Added GPIO data prefix. | Sameer, Mohammed |
| Jul 18, 2022 | Removed instruction 'loopnext' and consolidated its function into instruction 'goto'. | Sameer, Mohammed |
| Jul 18, 2022 | Modified instruction 'jmptblexec' so that its operands are now not after the opcode but are taken from the call communications page. | Sameer, Mohammed |
| Jul 18, 2022 | In instruction 'jmptblexec' changed first operand to "address of where limit-number of calls is stored" and elsewhere corrected formatting and extended names of the "Capabilities". | Sameer, Mohammed |
| Jul 16, 2022 | Changed instruction 'loadprocess' from taking the new process' descriptor address as an immediate value to the new descriptor address to be found at a fixed word address in kernel space. This because it is not possible to know beforehand the addresses of the many process' descriptor addresses at run time. (edited) | Sameer, Mohammed |
| Jul 16, 2022 | Added section for listing of all kernel calls. | Sameer, Mohammed |
| Jul 16, 2022 | Changed wearable's wireless capability to be enabled from 4G mobile telephony to WiFi. | Sameer, Mohammed |
| Jul 16, 2022 | Added bit 'If Super Access Process' in register 'Process Settings'. | Sameer, Mohammed |
| Jul 15, 2022 | Adjusted the bit positions in instruction 'setinstcfg'. | Sameer, Mohammed |
| Jul 14, 2022 | In register 'Process Settings' added bit 'If Breakpoint Enabled'. Unified data read and write breakpoint addresses into a single data access breakpoint address. Removing breakpointing bits from page table entry. (edited) | Sameer, Mohammed |
| Jul 13, 2022 | Added to register 'Process Settings' the bit 'If In Interrupt' to indicate a process that is currently handling a interrupt. | Sameer, Mohammed |
| Jul 12, 2022 | Completed the section 'User mode services and the IPC calls'. | Sameer, Mohammed |
| Jul 12, 2022 | Added Process Descriptor field 'Debug Target Register State and Process Descriptor State Dump Address'. Added register 'Debugger Process Descriptor Address'. Added Capability 'CAP_RANDOM_GENERATE'. (edited) | Sameer, Mohammed |
| Jul 11, 2022 | Elaborated process debugging by putting instruction execution breakpoint bit, data read breakpoint bit and data write breakpoint bit in the page table entry so that instructions can trigger these bits at page level and then the executing instruction will check the process' main process' descriptor fields that store the exact addresses for for particular instruction breakpoint, data read breakpoint and data write breakpoint. | Sameer, Mohammed |
| Jul 11, 2022 | Prefixed the 'Scratchpad x' registers with "Computation". Simplified instruction 'takelock'. | Sameer, Mohammed |
| Jul 11, 2022 | Beginning to add fields to the Process Descriptor. (edited) | Sameer, Mohammed |
| Jul 11, 2022 | Added bit 'If Blocked' in the register 'Process Settings'. (edited) | Sameer, Mohammed |
| Jul 11, 2022 | Now there are just two 'Data State Change Address For Notification' registers instead of four. | Sameer, Mohammed |
| Jul 11, 2022 | The number processing method is now either integer or Posit. IEEE-754 is no longer there. | Sameer, Mohammed |
| Jul 11, 2022 | Number of computation units will now sit in 10 bits which means the valid values are 0 to 1023 because if instruction 'setinstcfg' provides a zero as the number of computation units to use it should be taken as one computation unit to use. (edited) | Sameer, Mohammed |
| Jul 9, 2022 | Removed the common breakpointing bit in the 'Process Settings' register and added four 'Data State Change Address For Notification x' registers. | Sameer, Mohammed |
| Jul 8, 2022 | Added section to list the OS' "Capabilities" allotable to a process. | Sameer, Mohammed |
| Jul 8, 2022 | Beginning to write about service calls. (edited) | Sameer, Mohammed |
| Jul 5, 2022 | Added section about SoC interfacing. | Sameer, Mohammed |
| Jul 3, 2022 | Removed reference to analog data-processing because the time spent in researching that element can be rather spent in researching on how to integrate the digital data-processing element with bio-computing element. | Sameer, Mohammed |
| Jul 1, 2022 | The instruction 'takelock' will now take as its first operand the address of the word where is present the data structure containing the lock. This field was earlier the direct address of the data structure but I changed it because the kernel cannot hard-code the address of each such data structure. | Sameer, Mohammed |
| Jun 30, 2022 | Removed instruction 'setbrkpnt' because program debugging is now a desktop function. | Sameer, Mohammed |
| Jun 30, 2022 | Changed the number of bits for the number of computation units from 8 to 11 so that the instruction 'setinstcfg' can be set with the range of 1 to 1024 computation units. | Sameer, Mohammed |
| Jun 29, 2022 | Added text about the various I/O interfaces to be fitted in Kosmos SoC. | Sameer, Mohammed |
| Jun 29, 2022 | Added an offset field in the instructions 'setfromfirstzerobit' and 'unsetbitsat'. | Sameer, Mohammed |
| Jun 29, 2022 | Added sections for instructions that can operate on a vector. | Sameer, Mohammed |
| Jun 29, 2022 | Added instruction 'unsetbitsat'. | Sameer, Mohammed |
| Jun 29, 2022 | Added section for OS error codes. | Sameer, Mohammed |
| Jun 28, 2022 | Added instruction 'setfromfirstzerobit'. | Sameer, Mohammed |
| Jun 28, 2022 | Added mention of Kosmos to be added with bio-electronic functionality in future. Consolidated the instructions for addition, subtraction and multiplication in integer, Posit and IEE 754 form to be done by three generic instructions - add, sub, mul - whose form is selected by the instruction 'setinstcfg' | Sameer, Mohammed |
| Jun 26, 2022 | Changed name of projet to Kosmos. | Sameer, Mohammed |
| Jun 12, 2022 | Added instruction 'setbrkpnt'. | Sameer, Mohammed |
| Jun 12, 2022 | Edited text in the Memory Management section regarding the 'Code' page directory entry bit. (edited) | Sameer, Mohammed |
| Jun 9, 2022 | Changed the instructions 'add', 'sub', 'mul' system to become three integer instructions and three real number instructions. | Sameer, Mohammed |
| Apr 18, 2022 | In the instruction 'takelock' shortened the "byte offset..." field to eight bits. Removed the instructions 'setfirstzerobit' and 'appendonebit'. (edited) | Sameer, Mohammed |
| Apr 10, 2022 | Modified the naming of operands in the instruction 'takelock'. | Sameer, Mohammed |
| Apr 9, 2022 | Added mention of the Call Communications Page in the memory management section. | Sameer, Mohammed |
| Apr 9, 2022 | Renamed project as Emerald. | Sameer, Mohammed |
| Apr 3, 2022 | Added word "Address" to the breakpoint registers. | Sameer, Mohammed |
| Apr 3, 2022 | Added mention of analog data-processing and Posit Numbering System in context of the SoC. | Sameer, Mohammed |
| Mar 27, 2022 | In the Process Settings register combined the specific instruction and data breakpoint settings into one 1-bit setting. | Sameer, Mohammed |
| Mar 27, 2022 | Added mention of stacked memory. | Sameer, Mohammed |
| Mar 27, 2022 | Other than 32-bit data processing, now reduced the 256-bit data processing to 128-bit because it seems applications don't need more than this width and it will reduce the size of registers and logic. | Sameer, Mohammed |
| Mar 25, 2022 | Changed maximum value in register 'Max Number of Computation Units' from 255 to 16. | Sameer, Mohammed |
| Mar 14, 2022 | Retaining the vector processing to only 32-bit and 256-bit data and removing 64-bit and 128-bit processing so that the system becomes simpler. (edited) | Sameer, Mohammed |
| Mar 5, 2022 | Added a lock address offset operand to the 'takelock' instruction. | Sameer, Mohammed |
| Feb 15, 2022 | Brought back instruction and data breakpoint registers into the instruction issue unit and made them two each instead of three each. | Sameer, Mohammed |
| Feb 14, 2022 | Removed register 'Current Process' from the instructions issue unit. Added "Native process' process descriptor" to the process page directory. Through the 'loadprocess' instruction already loading the new process' page directory and the process descriptor now being linked in the page directory at a fixed address the kernel can now directly find the current process' process descriptor's elements easily. Added instruction breakpoint addresses and data breakpoint addresses to the process descriptor. (edited) | Sameer, Mohammed |
| Feb 10, 2022 | Added the instruction and data breakpoint system. May be enhanced. | Sameer, Mohammed |
| Feb 10, 2022 | Begun modifying instructions for vector processor usage. | Sameer, Mohammed |
| Feb 5, 2022 | Replaced the idea of Spice processsor of having NoC with the idea of it being a Vector Processor because the VP is a much simpler idea not requiring the OS kernel to control the executions units and not requiring inter-execution-unit communication protocol by hardware and the kernel. | Sameer, Mohammed |
| Feb 4, 2022 | Added text about inclusion of the NoC concept. | Sameer, Mohammed |
| Feb 4, 2022 | Added instruction 'mul'. | Sameer, Mohammed |
| Feb 2, 2022 | Added instruction 'setfirstzerobit'. | Sameer, Mohammed |
| Jan 31, 2022 | Removed instructions 'kcall', 'kexit', 'saveprocess' and 'runprocess' and replaced their functionality with the instructions 'movimm' and 'movreg'. | Sameer, Mohammed |
| Jan 31, 2022 | Made register 'If In Kernel Mode' to become of 32 bits. | Sameer, Mohammed |
| Jan 30, 2022 | There is only one Scratchpad register now. | Sameer, Mohammed |
| Jan 27, 2022 | Renamed instruction 'loop-next' as 'loopnext' in keeping with the nomenclature in Spice of having the instruction name composed of continuous individual words. | Sameer, Mohammed |
| Jan 26, 2022 | Removed instruction 'load-loop-counter' as its work can be done by instructions 'movimm' or 'movreg'. | Sameer, Mohammed |
| Jan 26, 2022 | Removed instruction 'loop-forever' because of presence of the general purpose instruction 'goto'. | Sameer, Mohammed |
| Jan 26, 2022 | Added back the instruction 'saveprocess'. | Sameer, Mohammed |
| Jan 22, 2022 | Removed registers R3 and R4 because kernel calls and service calls can anyway use the Call Communications Page. So this will hasten up context saves and loads by removing two memory words. | Sameer, Mohammed |
| Jan 21, 2022 | Added instructions 'goto' and 'takelock'. Shortened the 'Scratchpad x Registers' to 'Scratchpad x'. | Sameer, Mohammed |
| Jan 17, 2022 | Updated sections Memory Management and of instruction 'jmptblexec'. | Sameer, Mohammed |
| Jan 13, 2022 | Brought back the instruction 'kexit' because using 'runprocess' instruction would not only be slower to get process into user mode because it would load all the registers but also I think, when used for k mode to u mode transition, would put the OS into a hang. (edited) | Sameer, Mohammed |
| Jan 11, 2022 | Removed instruction 'saveprocess' because full process context is anyway saved at process round-robin interrupt time and at other interrupts time. | Sameer, Mohammed |
| Jan 8, 2022 | Removed register 'Scratchpad Register 3'. (edited) | Sameer, Mohammed |
| Jan 7, 2022 | Renamed register 'If Fully In Kernel Mode' as 'If In Kernel Mode'. | Sameer, Mohammed |
| Jan 6, 2022 | removed instruction 'resolve-ptr' as it duplicated 'load'. | Sameer, Mohammed |
| Jan 4, 2022 | Removed the R5 and R6 registers because of the bringing back of the Call Communications Page. | Sameer, Mohammed |
| Jan 4, 2022 | Brought back the concept of Call Communications Page. | Sameer, Mohammed |
| Jan 3, 2022 | Renamed back register 'Generated Physical Page Address' to 'Generated Physical Address'. | Sameer, Mohammed |
| Jan 3, 2022 | Removed instruction 'copyword' in favor of enhancing 'load' and 'store' because 'copyword' duplicated 'load' and 'store' and having separate data memory read and write access instructions will help simplify isolation of memory access faults. (edited) | Sameer, Mohammed |
| Dec 31, 2021 | Changed a bit about the LED display interfaces and camera interfaces. | Sameer, Mohammed |
| Dec 31, 2021 | Removed the idea of use of real-time clock. Employment of real world time has to be done through another way. | Sameer, Mohammed |
| Dec 31, 2021 | Replaced idea of using USB with a customized "Controller for system bus and interrupts". | Sameer, Mohammed |
| Dec 26, 2021 | Added instruction 'jmptblexec'. | Sameer, Mohammed |
| Dec 26, 2021 | Added three scratchpad registers. | Sameer, Mohammed |
| Dec 22, 2021 | Brought back 4G cell phone transceiver for the SoC instead of WiFi because cell phone has become universal and I think can also be specially enabled for operation without base station - I mean ad hoc networking. | Sameer, Mohammed |
| Dec 20, 2021 | Renamed serviceInvoke() as serviceCall() to reflect uniformity with the 'kcall' processor instruction. | Sameer, Mohammed |
| Dec 19, 2021 | Renamed register 'If In Kernel Mode' as 'If Fully In Kernel Mode'. | Sameer, Mohammed |
| Dec 18, 2021 | Renamed instruction 'kenter' to 'kcall'. | Sameer, Mohammed |
| Dec 17, 2021 | Removed the 'kexit' instruction. | Sameer, Mohammed |
| Dec 16, 2021 | Beginning to make the calls serviceInvoke() and serviceReturnToClient() the universal calls to avail of kernel services and user-mode services. | Sameer, Mohammed |
| Dec 16, 2021 | Removed the concept of Call Communications Page. Any parameters will be provided in the R registers. Added register R6. | Sameer, Mohammed |
| Dec 13, 2021 | Renamed instructions 'load-r1' and 'store-r1' as 'load' and 'store' respectively. | Sameer, Mohammed |
| Dec 10, 2021 | Added registers R4 and R5. Added instructions 'movimm' and 'movreg'. (edited) | Sameer, Mohammed |
| Dec 9, 2021 | The size of a Process Descriptor is now 'x bytes', the x maybe 256 bytes or maybe 512 bytes and will be decided with further project development. Having a smaller Process Descriptor saves memory especially when one PD has to be copied to each child process in a client process system. | Sameer, Mohammed |
| Dec 9, 2021 | Added 'Subservice Number' to serviceInvoke(). | Sameer, Mohammed |
| Dec 9, 2021 | Added info about discarding processor caching. | Sameer, Mohammed |
| Dec 5, 2021 | Added register 'If In Kernel Mode'. (edited) | Sameer, Mohammed |
| Dec 5, 2021 | Modified the page directory status bits and the process memory map. (edited) | Sameer, Mohammed |
| Dec 3, 2021 | Modified the text in the IPC Calls section. | Sameer, Mohammed |
| Dec 3, 2021 | In Spice OS' process management section added text about Process Partitioning. | Sameer, Mohammed |
| Dec 1, 2021 | Changed kernel page tables limit from 32 MB to 64 MB. | Sameer, Mohammed |
| Nov 30, 2021 | Changed instructions 'load-r1-mem' and 'store-r1' to include offset value in operand1. | Sameer, Mohammed |
| Nov 30, 2021 | Added the 'mov-r1-r3' instruction. | Sameer, Mohammed |
| Nov 25, 2021 | Added the 'copyword' instruction. | Sameer, Mohammed |
| Nov 25, 2021 | Renamed register 'Current Page Directory' as 'Current Page Directory Page Number. | Sameer, Mohammed |
| Nov 24, 2021 | Replaced the load and store pointer instructions with 'resolve-ptr' instruction. | Sameer, Mohammed |
| Nov 24, 2021 | Added instructions 'mov-r1-r2' and 'mov-r2-r1'. Removed the memory load and store instructions in context of register R2. Removed instruction 'load-r2-imm'. (edited) | Sameer, Mohammed |
| Nov 21, 2021 | Removed the two byte-copy instructions and put the order of register R1 first in the load and store instructions. (edited) | Sameer, Mohammed |
| Nov 21, 2021 | Renamed register 'Generated Physical Address' to 'Generated Physical Page Address'. (edited) | Sameer, Mohammed |
| Nov 18, 2021 | For page directory and page table, replaced the phrase 'Base Address' with 'Page number'. (edited) | Sameer, Mohammed |
| Nov 17, 2021 | Added the 'Generated Physical Address' register. (edited) | Sameer, Mohammed |
| Nov 17, 2021 | Changed the memory system including client process I/O buffer mapping. | Sameer, Mohammed |
| Nov 16, 2021 | In 'Process memory map' section added entry for page tables for private data for a child process. | Sameer, Mohammed |
| Nov 15, 2021 | Changed process priorities to be totally 16. (edited) | Sameer, Mohammed |
| Nov 9, 2021 | Renamed instructions 'syscall' and 'sysexit' to 'kenter' and 'kexit' because they are more appropriate. | Sameer, Mohammed |
| Nov 9, 2021 | Renamed instruction 'addonebit' to 'appendonebit' because that is more appropriate. | Sameer, Mohammed |
| Nov 9, 2021 | Changed all references to "Syscall communications page" to a general "Call communications page". | Sameer, Mohammed |
| Nov 9, 2021 | Changed text about kernel memory pools. | Sameer, Mohammed |
| Nov 9, 2021 | Renamed "real-time timer" in the Processor Overview section to "real time clock". | Sameer, Mohammed |
| Nov 7, 2021 | Removed mention of the separate AI unit. ML / AI can be perhaps done as sequential code if the processor instruction set is efficient and general purpose enough. (edited) | Sameer, Mohammed |
| Nov 6, 2021 | Changed some text in the 'switchprocesses' instruction. | Sameer, Mohammed |
| Oct 30, 2021 | Removed setting in page directory for native 4 MB I/O data page. | Sameer, Mohammed |
| Oct 30, 2021 | Added the 'countofonebits' and 'addonebit' instructions and removed the 'inv' instruction. (edited) | Sameer, Mohammed |
| Oct 26, 2021 | Added a line in the "Register set" section. | Sameer, Mohammed |
| Oct 26, 2021 | Changed the description in the switchprocesses instruction section. | Sameer, Mohammed |
| Oct 26, 2021 | Added paragraph about the wearable computer. Replaced LIDAR as the user input method with camera-based method. | Sameer, Mohammed |
| Oct 25, 2021 | Added line about the bus system in the SoC. | Sameer, Mohammed |
| Oct 24, 2021 | Added a separate code page table to the minimum pages of a process. | Sameer, Mohammed |
| Oct 24, 2021 | Added process priorities. | Sameer, Mohammed |
| Oct 24, 2021 | Added "Current Page Directory" register. | Sameer, Mohammed |
| Oct 24, 2021 | Added to the "switchprocesses" instruction. | Sameer, Mohammed |
| Oct 24, 2021 | Changed arrangement of the service call system and its memory management. | Sameer, Mohammed |
| Oct 24, 2021 | Removed parameter 'Buffer' from serviceConnect() and added it to serviceInvoke(). | Sameer, Mohammed |
| Oct 23, 2021 | Made multiple changes to the Memory Management section. Still some to do. (edited) | Sameer, Mohammed |
| Oct 23, 2021 | Used the general term "Multimedia processing" instead of "3D graphics unit". Added "AI unit". (edited) | Sameer, Mohammed |
| Oct 22, 2021 | Changed the first parameter of the switchprocesses instruction. | Sameer, Mohammed |
| Oct 22, 2021 | Added Current Process register and updated its consequent info in the section for the switchprocesses instruction. | Sameer, Mohammed |
| Oct 15, 2021 | Added empty section for processor instructions for critical sections. | Sameer, Mohammed |
| Oct 14, 2021 | Added section for camera receive data that cannot come in as an image. | Sameer, Mohammed |
| Oct 14, 2021 | Renamed project to Spice. | Sameer, Mohammed |
| Oct 11, 2021 | Changed a few things in the General Processor Overview section including removing USB and adding RAM controller, LIDAR and memory card controller. (edited) | Sameer, Mohammed |
| Oct 11, 2021 | Added entry for the SoC subsystem of Real-time timer. | Sameer, Mohammed |
| Oct 11, 2021 | Added the switchprocesses instruction. (edited) | Sameer, Mohammed |
| Oct 11, 2021 | Changed parameters of IPC calls and added the serviceInquireClientBufferSize() function. | Sameer, Mohammed |
| Oct 11, 2021 | Changed order of page directory entry bits. | Sameer, Mohammed |
| Sep 26, 2021 | Replaced the standalone LED diode and the LDR with a second LED display and provision for a USB-connected camera, respectively. | Sameer, Mohammed |
| Sep 21, 2021 | Removed text about multicore processor. Going back to the original idea of single core. | Sameer, Mohammed |
| Sep 15, 2021 | Added statements in processor overview about LED, LDR, camera and screen. | Sameer, Mohammed |
| Sep 11, 2021 | Added comment about the possibility of multicore processor. | Sameer, Mohammed |
| Sep 7, 2021 | Added Expected Client Buffer Size as parameter to serviceAdd() and as return value from serviceConnect(). (edited) | Sameer, Mohammed |
| Sep 7, 2021 | Added section for mutex priority inheritance. | Sameer, Mohammed |
| Sep 7, 2021 | Renamed project to Sapphire. | Sameer, Mohammed |
| Sep 6, 2021 | Added process memory map. | Sameer, Mohammed |
| Sep 6, 2021 | Totally changed IPC calls and somewhat changed memory management. Will write more about the process memory map after saving this. Added the Process Status register. (edited) | Sameer, Mohammed |
| Sep 4, 2021 | Modified OS calls to include non-blocking messaging. Changed OS service limit from 8 to 5 and changed service channel limit from 8 to 10. (edited) | Sameer, Mohammed |
| Aug 27, 2021 | Added details about page table and about 4 KB client I/O buffers. | Sameer, Mohammed |
| Jul 10, 2021 | Added empty section for thread scheduling. | Sameer, Mohammed |
| Jun 29, 2021 | Added section for interrupt handling. (edited) | Sameer, Mohammed |
| Jun 29, 2021 | Added text about memory banks. | Sameer, Mohammed |
| Jun 28, 2021 | Added section about page directory status bits. | Sameer, Mohammed |
| Jun 28, 2021 | Remove "mic" and "speaker" because these two can be done through USB connectivity. | Sameer, Mohammed |
| Jun 27, 2021 | Replaced "multi-core" with "single core CPU". (edited) | Sameer, Mohammed |
| Jun 25, 2021 | Renamed project to "Ad Astra". | Sameer, Mohammed |
| Jun 23, 2021 | In system call msgAddService() only the first CBAA address is now retained. (edited) | Sameer, Mohammed |
| Jun 20, 2021 | Renamed the loop instructions | Sameer, Mohammed |
| Jun 19, 2021 | Clarified some text in the "Synchronous IPC" section. | Sameer, Mohammed |
| Jun 17, 2021 | Did some text formatting. | Sameer, Mohammed |
| Jun 12, 2021 | Added load and store instructions for byte copying. | Sameer, Mohammed |
| Jun 11, 2021 | Added text about kernel memory allocator. | Sameer, Mohammed |
| Jun 11, 2021 | Added sections for 5 KB page directory and page table entry. | Sameer, Mohammed |
| Jun 7, 2021 | Added text about no kernel buffering. | Sameer, Mohammed |
| Jun 7, 2021 | Removed "less-than compare value" as it is redundant. | Sameer, Mohammed |
| Jun 5, 2021 | Added text about 4 MB data page and 4 KB page table. | Sameer, Mohammed |
| Mar 4, 2021 | Added memory pointer instructions. | Sameer, Mohammed |
| Feb 20, 2021 | Added A.OUT section about executable file format and added data types supported by Taar OS. (edited) | Sameer, Mohammed |
| Feb 14, 2021 | Added OS details. (edited) | Sameer, Mohammed |
| Dec 23, 2020 | Removed lookup instr because its work was anyway being done by load-mem instrs. | Sameer, Mohammed |
| Dec 21, 2020 | Removed spinlocktake and spinlockrelease. Will have to get atomic oeprations done in some way. | Sameer, Mohammed |
| Dec 21, 2020 | Added simple input and output pins, and timer. | Sameer, Mohammed |
| Dec 11, 2020 | Replaced VGA with LED interface. | Sameer, Mohammed |
| Nov 27, 2020 | Went back to Microkernel OS. Removed extra mem address lines. | Sameer, Mohammed |
| Nov 27, 2020 | Replaced callcxt and exitcxt instructions with sysenter and sysexit. | Sameer, Mohammed |
| Nov 26, 2020 | Changed type of OS to Hybrid | Sameer, Mohammed |
| Oct 14, 2020 | Added text about graphics processing. | Sameer, Mohammed |
| Sep 14, 2020 | Removed HDMI and Ethernet. | Sameer, Mohammed |
| Feb 20, 2020 | Modified storereg-* to store-* | Sameer, Mohammed |
| Feb 20, 2020 | Changed listing of Taar from under "Processor" to under "System on chip" | Sameer, Mohammed |
| Feb 20, 2020 | Renamed "loadreg-*" to "load-*". Replaced load-imm and load-mem for R1 to load-imm-r1, load-imm-r2, load-mem-r1, load-mem-r2. | Sameer, Mohammed |
| Jan 27, 2020 | Removed TMR section. | Sameer, Mohammed |
| Jan 17, 2020 | Added GPIO. Added "four milliseconds run time" in Hardware-assisted task scheduling. | Sameer, Mohammed |
| Jan 13, 2020 | Removed CAN and added Ethernet | Sameer, Mohammed |
| Dec 28, 2019 | Cleaned up the General Processor Overview section, including removing the AD / DA channel select lines. (edited) | Sameer, Mohammed |
| Dec 24, 2019 | Changed some language in project intro. Removed GPIO and instead added DA, AD and their channel select lines. | Sameer, Mohammed |
| Dec 24, 2019 | Added more details about Partitioning. Removed details about the processor's three app divisions. | Sameer, Mohammed |
| Dec 19, 2019 | Removed register R4 as it was not necessary. | Sameer, Mohammed |
| Dec 18, 2019 | Added "Instruction Interleaving" text to Hardware-assisted task scheduling section | Sameer, Mohammed |
| Dec 18, 2019 | Added { Serial access to memory and handshake lines } to Memory Management section (edited) | Sameer, Mohammed |
| Dec 12, 2019 | Added Triple Modular Redundancy ( TMR ) | Sameer, Mohammed |
| Dec 2, 2019 | Added to "Memory Management" section | Sameer, Mohammed |
| Dec 2, 2019 | Added application of Taar in server systems | Sameer, Mohammed |
| Nov 20, 2019 | Added Contributors section and changed some bit of the Intro section | Sameer, Mohammed |
| Nov 13, 2019 | Added "clockless". (edited) | Sameer, Mohammed |
| Oct 10, 2019 | Added entry for SRT | Sameer, Mohammed |
| Oct 10, 2019 | Added entry for USB, GPIO, HDMI and cell phone modem | Sameer, Mohammed |
| Jun 25, 2019 | Removed "clockless" to reflect that the processor is from now a clocked one | Sameer, Mohammed |
| Mar 11, 2019 | Added Vishal Zuluk's name to the general overview section. (edited) | Sameer, Mohammed |
| Dec 17, 2018 | Added note about FPD | Sameer, Mohammed |
| Dec 16, 2018 | Added a credentials line | Sameer, Mohammed |
| Dec 12, 2018 | Adding section for memory management | Sameer, Mohammed |
| Dec 10, 2018 | Removed rotate instructions and added invert instruction | Sameer, Mohammed |
| Oct 26, 2018 | Adding info about hardware-assisted task scheduling | Sameer, Mohammed |
| Oct 21, 2018 | Added "offset" to loadreg-mem | Sameer, Mohammed |
| Oct 16, 2018 | Added section about "Service-name directory". | Sameer, Mohammed |
| Sep 17, 2018 | Removed line about usability in supercomputer needs. | Sameer, Mohammed |
| Dec 26, 2017 | Added the missed part about Taar being clock-less and RISC-based | Sameer, Mohammed |
| Dec 26, 2017 | Put in some more clarity about the project in the overview section | Sameer, Mohammed |
| Dec 25, 2017 | Added description of tas | Sameer, Mohammed |
| Dec 25, 2017 | adding storereg-byte and storereg-word instructions | Sameer, Mohammed |
| Dec 25, 2017 | Changed the Overview to provide a broader understanding of the chip | Sameer, Mohammed |
| Dec 25, 2017 | Created the first overview for the project | Sameer, Mohammed |
| Dec 20, 2017 | Since I don't know VHDL at the point I am changing language from "VHDL" to "others" | Sameer, Mohammed |
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