nedoPC.org

вчера помаялся над эмулятором PERQemu 0.58 - не запускается по той причине, что dll-ки SDL2 64бит. Меняю на 32бит - эмуль ругается, что не найдены функции и не запускается.
Интересная игрушка, но для работы на нем надо почитать массу документации.

The PERQ CPU was a microcoded discrete logic design, rather than a microprocessor. It was based around 74S181 bit-slice ALUs and an Am2910 microcode sequencer. The PERQ CPU was unusual in having 20-bit wide registers and a writable control store (WCS), allowing the microcode to be redefined. The CPU had a microinstruction cycle period of 170 ns (5.88 MHz).

The original PERQ (also known as the PERQ 1), was housed in a pedestal-type cabinet with a brown fascia and an 8-inch floppy disk drive mounted horizontally at the top.

The PERQ 1 CPU had a WCS comprising 4k words of 48-bit microcode memory. The later PERQ 1A CPU extended the WCS to 16k words. The PERQ 1 could be configured with 256 kB, 1MB or 2 MB of 64-bit-wide RAM (accessed via a 16-bit bus), a 12 or 24 MB, 14-inch Shugart SA-4000-series hard disk, and an 8-inch floppy disk drive. The internal layout of the PERQ 1 was dominated by the vertically mounted hard disk drive. It was largely this that determined the height and depth of the chassis.

A basic PERQ 1 system comprised a CPU board, a memory board (incorporating the framebuffer and monitor interface) and an I/O board (IOB, also called CIO). The IOB included a Zilog Z80 microprocessor, an IEEE-488 interface, an RS-232 serial port, hard and floppy disk interfaces and speech synthesis hardware. PERQ 1s also had a spare Optional I/O (OIO) board slot for additional interfaces such as Ethernet.

A graphics tablet was standard. Most PERQ 1s were supplied with an 8½ ×11-inch, 768×1024 pixel portrait orientation white phosphor monochrome monitor. The machine was optimised to run PASCAL and ran at about 1MIP. The operating system was a UNIX version called PNX.