Kollmorgen S30301-NA Pulse driver module

The floating point unit (FPU) of the MC68060 microprocessor chip is supported in 177Bug. For MVME177Bug, the commands: ❏ MD ❏ MM ❏ RM ❏ RS have been extended to allow display and modification of floating point data in registers and in memory. Floating point instructions can be assembled/disassembled with the DI option of the MD and MM commands.1. The sign field is the first field and is a binary field. 2. The exponent field is the second field and is a hexadecimal field. 3. The mantissa field is the last field and is a hexadecimal field. 4. The sign field, the exponent field, and at least the first digit of the mantissa field must be present (any unspecified digits in the mantissa field are set to zero). 5. Each field must be separated from adjacent fields by an underscore. 6. All the digit positions in the sign and exponent fields must be present.

Scientific Notation

 This format provides a convenient way to enter and display a floating point decimal number. Internally, the number is assembled into a packed decimal number then converted into a number of the specified data type. Entering data in this format requires the following fields: ❏ An optional sign bit (+ or -) ❏ One decimal digit followed by a decimal point ❏ Up to 17 decimal digits (at least one must be entered) ❏ An optional Exponent field that consists of: – An optional underscore – The Exponent field identifier, letter “E” – An optional Exponent sign (+, -) – From 1 to 3 decimal digits

Additions to FLASH Commands 

The 4MB of Flash memory on the MVME177 is unique in the way that the lower half “shadows” the PROM space in the memory map. A jumper on the board allows the user to switch visibility between the PROM sockets or 2MB (one half) of the Flash array. Under software control, the lower half of Flash memory may be switched into and out of the address space normally occupied by the upper half of Flash memory, when the jumper (J8) is installed.

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