and other RISC processor instructions, such as JARL (Jump and Register Link) and load/store architecture. At this time, the enormous software assets of the V60/V70, such as real-time Unix, were abandoned and never returned to their successors, a scenario Intel avoided. The V800 Series had 3 major variants, the V810, V830, and V850 families. The V820 (μPD70742) was a simple variant of the V810 (μPD70732), but with peripherals. The designation V840 may have been skipped as a designation because of Japanese tetraphobia (see page 58). One Japanese pronunciation of "4" means "death", thus avoid names evoking such as Death-watch Shi-ban (the number 4 – Shi-ban) Bug (, precisely "deathwatch beetle"). As of 2005, it was already the V850 era, and the V850 family has been enjoying great success. As of 2018, it is called the Renesas V850 family and the RH850 family, with V850/V850E1/V850E2 and V850E2/V850E3 CPU cores, respectively. Those CPU cores have extended the ISA of the original V810 core; running with the V850 compiler. Modern software-based simulation MAME Because the V60/V70 had been used for many Japanese arcade games, MAME (for "Multiple Arcade Machine Emulator"), which emulates multiple old arcade games for enthusiasts, includes an CPU simulator for their instruction set architecture. It is a kind of an instruction set simulator, not for developers but for users. It has been maintained by the MAME development team. The latest open-source code, written in C++, is available from the GitHub repository. The operation codes in the file optable.hxx are exactly the same as those of the V60. See also NEC V20 V850 R4200 References Further reading External links Die photo of the V60; at Nikkei BP (in Japanese) Die photo of the V60; at Semiconductor History Museum of Japan (in Japanese) Die photo of the V60, mounted on PGA package (much clear, in Chinese) Die photo of the V60 with PGA packaging, removed ceramic cap (in Chinese) Photo of the V60 in PGA packaging w/ ceramic cap shield; glass shield Blog: PS98-145-HMW kit: "PC-UX/V" w/ 15 disks & "V60 Sub board" for NEC PC-9801 slot (in Japanese) Article: V70 in PGA packaging and the H-IIA rocket (in English) Photo of NEC V60 CPU board of the Sega Virtua Racing (in English) Site: "System 16" - Sega System 32 Hardware (in English) Site: "System 16" - Sega Model 1 Hardware (in English) Site: "System 16" - Sega System Multi 32 Hardware