Scott Blackledge Email & Phone Number

Austin, Texas Area

Gained DB2 and R+ experience by developing code updatesPorted released patches to additional R+ releasesDeveloped new R+ functionality

Austin, Texas Area

Developing an ARMv7 Cortex-A5 simulator. Phase I was to write un-optimized simulation (instruction fetch, decode, and execute and was working on virtual storage). Phase II was to implement an instruction cache containing code translated from ARM to IA32, along with a TLB.

Austin, Texas Area

Wrote and verified test cases for network adaptersDebugged and fixed test that failed because vendor changed production hardware without telling IBM.

Designing and maintaining software infrustructure for Citizens.

Writing firmware (instruction emulation, implemented multiprocessor support) to implement IBM z/Architecture on an Intel Itanium 2 platform. Coded in IA64 assembler. Also coded tool to run control block chains to display debugging info in Python.

Maintained firmware for several instruction emulation routines.Instrumental in developing a fully-functional emulator that allowed software to be tested on a desktop platform before being run on actual hardware. Developed the command parser for the emulator.

Worked on an NT-based architectural simulator for Amdahl's next generation processor. Was heavily involved with implementing the base ESA/390 architecture and mentoring other team members on the 390 architecture. In addition to writing most of the supervisor-state instructions and many of the problem-state instructions, developed the instruction decoder.

Ported the software needed to implement the Interpretive Execution Facility in Amdahl's processor. This involved knowledge if Interpretive Execution, several trips to Japan (discussion with Fujitsu's engineers, code development), and close work with Amdahl's hardware design verification engineers.Worked on the multiprocessing operating system kernel.

Worked on an inter-vendor file transfer, job control submission, and mailbox service (one of the first email and ftp-like packages). This was written in IBM Assembler and used low-level MVS system services. The IBM-to-IBM file transfer was very quick, in part because the code implemented full-cylinder reads and writes. It properly handled PDS directories.

Helped develop and support an MVS subsystem that controlled McAuto's unit record devices. It utilized the open, close, command, JCL interpreter, and other SSI exits. It used other MVS system services, including dynamic device allocation.Developed a file transfer service used by McDonnell Douglas Aircraft's many hosts.