IBM 6150 RT - Hardware

Hardware

Three models were produced, the 6150, 6151, and 6152. The basic types of machines were the tower model (6150), and the desktop model (6151). All these models featured a special board slot for the processor card, as well as machine specific RAM cards. Each machine had one processor slot, one co-processor slot, and two RAM slots.

There were three versions of the 6150/6151 processor card: the standard 032 processor card had a 5.9 MHz clock rate, 1 MB standard memory (expandable via 1 MB, 2 MB or 4 MB memory boards) and optional floating point accelerator.

The Advanced processor card had a 10 MHz clock and either 4 MB memory on the processor card, or external 4 MB ECC memory cards, and featured a built-in 20 MHz Motorola 68881 floating-point processor. The Enhanced Advanced processor card had a cycle time of 80ns, 16 MB on-board memory, while an enhanced advanced floating point accelerator was standard.

I/O was provided by eight ISA bus slots. A typically configured RT came with 4 MB of memory, maxing out at 16 MB, and with a 40 or 70 MB hard drive, upgradable to 300 MB or more with external SCSI cabinets. Also standard were mouse and either a 720×512 or 1024×768 pixel-addressable display and either a 4 MB/s Token Ring network adapter, or a 10Base2 Ethernet adapter.

The IBM 6152 was a hybrid IBM PS/2 Model 60 with a special MicroChannel board version of the 032 processor, dubbed a "crossbow" board. It ran only the AOS operating system, downloaded from another IBM 6150 or 6151 also running AOS, via a LAN TCP/IP interface.