for V20/V30 (Intel 8086), emulation mode, called High C/C++. Cygnus Solutions (currently Red Hat) also ported GCC as a part of an enhanced GNU compiler system (EGCS) fork, but it seems not to be public. , the processor-specific directory necv70 is still kept alive in the newlib C-language libraries (libc.a and libm.a) by RedHat. Recent maintenance seems to be done on Sourceware.org. The latest source code is available from its git repository. MV-4100 Ada 83–certified system The Ada 83–certified "platform system" was named MV‑4000, certified as "MV4000". This certification was done with a target system, that utilized the real-time UNIX RX-UX 832 OS running on a VMEbus (IEEE 1014)–based system with a V70 processor board plugged in. The host of the cross compiler was an NEC Engineering Work Station EWS 4800, whose host OS, EWS-US/V, was also UNIX System V–based. The processor received Ada-83 validation from AETECH, Inc., running the Ada Compiler Validation Capability tests. Evaluation board kits NEC released some plug-in evaluation board kits for the V60/V70. In-circuit emulator On-chip software debug support with the IE-V60 NEC based its own full (non-ROM and non-JTAG) probe-based in-circuit emulator, the IE-V60, on the V60, because V60/V70 chips themselves had emulator-chip capabilities. The IE-V60 was the first in-circuit emulator for V60 that was manufactured by NEC. It also had a PROM programmer function.Section 9.4, p. 205 NEC described it as a "user friendly software debug function". The chips have various trapping exceptions, such as data read (or write) to the user specified address, and 2 break-points simultaneously.Section 9 External bus status pins The external bus system indicates its bus status using 3 status pins, which provide three bits to signal such conditions as first instruction fetch after branch, continuous instruction fetch, TLB data access, single data access, and sequential data access. Section 6.1, p. 114 Debugging with V80 These software and hardware debugging functions were also built into the V80. However, the V80 did not have an in-circuit emulator, possibly because the presence of such software as real-time UNIX RX-UX 832 and real-time I-TRON RX616 rendered such a function unnecessary. Once Unix boots up, there is no need for an in-circuit emulator for developing either device drivers or application software. What is needed is a C compiler, a cross compiler, and a screen debugger—such as GDB-Tk—that works with the target device,. HP 64758 Hewlett Packard (currently Keysight) offered probing-pod-based in-circuit emulation hardware