The Intel intellec Series II computers were used as development systems for the 8086, 8085, 8080, 8048 and 8051 microprocessor families.

Two systems were obtained within only a couple of weeks in August 2021. One Model 221 and the other a Model 226.

The model 221 was in relatively good shape, at least on the outside. Unfortunately, the keyboard was missing some keys. If the computer has the original configuration (still to be determined), model 221 means that the main CPU on the Integrated Processor Board (IPB) is an Intel 8080A-2 running at 2.6MHz with 32k RAM and 4k ROM. The internal floppy is a 250kB singel density 8 inch drive. The external diskette cabinet is labeled MDS DDR with a manufacturing date of Oct 1979. This contains two double density 8″ drives.

The model 226 was in relatively poor condition with some screen mold and a corroded chassis, probably the result from being stored under humid conditions for many years. On the other hand, it had a complete keyboard.

The original configuration for model 226 is an Integrated Processor Card (IPC) with an Intel 8085A-2 running at 4 MHz and with 64k RAM and 4k ROM. The internal floppy is also here a 250kB singel density 8 inch drive. The external MDS 721 diskette unit has two low-profile double density 8″ drives and was manufactured in Oct 1980. The model 226 together with the external floppy drive chassis is also referred to as 236.

The model 226 also came with an ICE (In Circuit Emulator) module for MCS-85 and a separate unit called PROMPT 48, which is a machine language develpment tool for the Intel MCS-48 family. More about this later.