Among the systems which benefited from having a 68000 or derivative as their microprocessor were families of Programmable Logic Controllers (PLCs) manufactured by Allen-Bradley, Texas Instruments and subsequently, following the acquisition of that division of TI, by Siemens. The 68000 is also unable to easily support virtual memory, which requires the ability to trap and recover from a failed memory access. That is, a higher-numbered interrupt can always interrupt a lower-numbered interrupt. In the status register, a privileged instruction allows one to set the current minimum interrupt level, blocking lower or equal priority interrupts. The 68000 family stores multi-byte integers in memory in big-endian order.
Vector 24 starts the real interrupts: spurious interrupt (no hardware acknowledgement), and level 1 through level 7 autovectors, then the 16 TRAP vectors, then some more reserved vectors, then the user defined vectors. These processors have no floating point unit and it is difficult to implement an FPU coprocessor (MC68881/2) with one because the EC series lacks necessary coprocessor instructions. Also, software for new Icom radios (IC-F110, 110S, 111, 111S, 210, 210S) was added. This product has been discontinued, please contact us at to check for alternatives, accessories or spares availability.
Такая процедура испытаний — залог качества, надежности и долговечности радиостанций. The first vector (RESET) consists of 2 vectors, namely the starting stack address, and the starting code address. The 68000 also saw success in the field of industrial control systems. Additions on RADIO partition: — On ICOM page look for program for IC-F510, 521, 610, 621 radios. Architecture Address bus The 68000 has a 24-bit external address bus and two byte-select signals «replaced» A0. These 24 lines can therefore address 16 MB of physical memory with byte resolution. Additions in PAGING partition — new version of control software for POC32 posag decoder.