Commodore CBM-II

Series of 8-bit personal computers released in 1982 Commodore CBM-IIManufacturerCommodore Business Machines (CBM)TypePersonal computerReleased1982; 44 years ago (1982)Discontinued1984; 42 years ago (1984)Operating systemMicrosoft BASIC 4.0CPUMOS Technology 6509 @ 1 or 2 MHz, Intel 8088 or Zilog Z80A @ 4 MHz optionMemory128 or 256 KBGraphicsVIC-II (320 × 200, 16 colors, sprites, raster interrupt) or 6545 CRTCSoundSID 6581 (3× osc, 4× wave, filter, ADSR, ring)ConnectivityRS-232, A/V, digital tape, ROM cartridge, audio minijack, mains power, parallel IEEE-488 (Commodore floppy drives and printers)PredecessorCommodore PETSuccessorNone The Commodore CBM-II series is a short-lived range of 8-bit personal computers from Commodore Business Machines (CBM), released in 1982 and intended as a follow-on to the Commodore PET series. Technical description The CBM-II has two incarnations, the P series (P = personal, or, home use) and the B series (B = business use). The B series was available with a built-in monochrome monitor (hi-profile) with detached keyboard, and also as a single unit with built-in keyboard but no monitor (lo-profile). These machines are often referred to as the "Porsche P