PC-8801 mkII

PC-8801 mkII
Manufacturer: NEC
Release Date RRP Code JP 1983-11 JP (1) 1983-11 JP (2) 1983-11

{{#seo:

|image=https://necretro.org/images/d/d1/PC8801mkII.jpg
|site_name=NEC Retro
|locale=en_GB

}}

The PC-8801 mkII is the first revision of the PC-8801 released in 1983.

Hardware

Unlike previous "mkII" machines, the PC-8001 mkII and PC-6001 mkII, the PC-8801 mkII is much the same as the original computer, just with a different physical space-saving design and some improved sound capabilities. The processor and RAM configuration is a match for the PC-8801, and thus all PC-8801 software will work on a mkII, however games optimised for the mkII's new sound hardware will either be silent or fall back to the standard beeper if played on an original unit.

Unlike the original PC-8801 where any floppy disk drives had to be connected externally, the mkII case has space for two internal 5¼-inch drives, and was sold in three configurations; the model 10 (no drives), model 20 (one double-density drive) and model 30 (two double density drives). It is also designed so that it can be used used both vertically and horizontaly.

Technical Specifications

• CPU: NEC PD780C-1 (Z80A-compatible)
• Resolutions: (N mode / V1 mode)
• Memory: 40+8+24 = 72 KB ROM, 64+48 = 112 KB RAM
• Sound: beep, SSG (through beeper)

Software

• Operating system: NEC PowerMOS (USA only, model 20U), Digital RT-11 (USA and Europe only, model 30U and 30E)
• BASIC: NEC N-88 Basic

List of games

• Thexder