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The Intel 8085 ("eighty-eighty-five") is an 8-bit microprocessor produced by Intel and introduced in March 1976. [2] It is the last 8-bit microprocessor developed by Intel. It is software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features.
The 8254, described as a superset of the 8253 with higher clock speed ratings, has a "preliminary" data sheet in the 1982 Intel "Component Data Catalog". The 8254 is implemented in HMOS and has a "Read Back" command not available on the 8253, and permits reading and writing of the same counter to be interleaved.
The SDK-85 MCS-85 System Design Kit was a single board microcomputer system kit using the Intel 8085 processor, clocked at 3 MHz with a 1.3 μs instruction cycle time. It contained all components required to complete construction of the kit, including LED display, keyboard, resistors, caps, crystal, and miscellaneous hardware.
DataSheets.com is a searchable database of electronic component data sheets and purchasing information. [1] The website is intended for Design engineers and Electronics purchasing agents. [2] DataSheets.com was developed by UBM in conjunction with SiliconExpert Technologies. [3]
The Intel 8080 ("eighty-eighty") is the second 8-bit microprocessor designed and manufactured by Intel.It first appeared in April 1974 and is an extended and enhanced variant of the earlier 8008 design, although without binary compatibility. [3]
Another unique feature of this computer was its serial port. The serial data was connected to the Intel 8085's SID and SOD (Serial In Data and Serial Out Data) pins. This allowed the use of the Intel 8085's RIM and SIM instructions to read the level on the SID and set the level on SOD line.
The System/23 Datamaster (Model 5322 desktop model [2] and Model 5324 floor model [3]) is an 8-bit microcomputer developed by IBM.Released in July 1981, [4] the Datamaster was the least expensive IBM computer until the far less expensive and far more popular IBM PC was announced in the following month.
The 8259 may be configured to work with an 8080/8085 or an 8086/8088. On the 8086/8088, the interrupt controller will provide an interrupt number on the data bus when an interrupt occurs. The interrupt cycle of the 8080/8085 will issue three bytes on the data bus (corresponding to a CALL instruction in the 8080/8085 instruction set).