CET2152C: Microprocessor Systems Maintenance (Advanced Microprocessors)

Course Description

CET2152C is the advanced microprocessor course in a Florida Computer Engineering Technology programme, and its distinguishing feature is that it approaches the subject from the diagnostic side rather than the design side. The Statewide Course Numbering System titles it Microprocessor Systems Maintenance and defines it as "diagnostic-lecture and laboratory experiences designed for a complete microcomputer. Included are assembly language, programming techniques, hardware tests and measurement techniques, diagnostic programming, and the development of an analytical troubleshooting process." There is no statewide prerequisite recorded.

⚠ Note the final clause of that definition: "the development of an analytical troubleshooting process." That is the actual subject. Assembly language, measurement technique and diagnostic programming are the means; the end is a student who can be handed a system that does not work and find out why — methodically, without guessing, and without replacing parts until something changes.

One Florida public institution carries this number — Hillsborough Community College — which titles it "Advanced Microprocessors", at 3 credits. The C suffix marks an integrated lecture-and-laboratory course, which for this subject is not optional: troubleshooting cannot be learned from a lecture.

⚠ The institutional title shifts the emphasis. "Microprocessor Systems Maintenance" and "Advanced Microprocessors" are the same field, but the first names diagnosis and the second names depth. This is a shift of weight rather than a different subject — unlike some numbers in this prefix, where the two titles describe genuinely different courses. See the offering notes below, and read your own syllabus for which half gets the extra weeks.

⚠ Because a single institution carries the number, and its published catalog could not be reached when this guide was written, the content below follows the statewide definition, which is authoritative for the number. Confirm specifics against your own course description.

Learning Outcomes

Required Outcomes

• Describe the architecture of a complete microcomputer system: processor, memory, buses, I/O, clock and reset circuitry, and power.
• Write, assemble and debug assembly language, including addressing modes, subroutines, the stack, and interrupt service routines.
• Explain the bus cycle — address, data and control signals in sequence — and predict what each line should be doing at a given moment.
• Analyse memory organisation and address decoding, and compute the range a decoder selects.
• Interface the processor to peripheral devices and verify the interface operates as designed.
• Select and use the right instrument for a measurement: multimeter, oscilloscope, logic probe, logic analyser — and explain what each can and cannot show you.
• Capture and interpret a logic analyser trace, correlating bus activity with the program that produced it.
• Write diagnostic programs — memory tests, I/O exercisers, signature routines — that isolate a fault rather than merely detecting one.
• Apply a structured troubleshooting process: observe, hypothesise, test the hypothesis, narrow the search, confirm the repair.
• Distinguish hardware faults from software faults, which is the decision that determines everything that follows.
• Diagnose faults in power, clock and reset circuitry — ⚠ the causes of the symptom "nothing works at all", and the first things a competent technician checks.
• Document a diagnosis and a repair so that it is reproducible and auditable.

Optional Outcomes

• Work with embedded development tools: in-circuit emulators, debuggers, JTAG boundary scan.
• Program in C for an embedded target alongside assembly, and understand what the compiler produced.
• Diagnose serial and network interfaces at the protocol level.
• Apply signature analysis and built-in self-test techniques.
• Perform board-level rework and soldering repair.
• Address electrostatic discharge control and its role in both prevention and failure analysis.
• Work with a modern microcontroller platform as a comparison with the classic architecture studied.

Major Topics

Required Topics

• Microcomputer system architecture — the complete system rather than the processor alone: clock generation, reset, power sequencing, buses, memory map, I/O.
• Assembly language — instruction set, addressing modes, stack operation, subroutines, interrupts and vectors.
• Programming techniques — modular code, timing loops and their pitfalls, polled versus interrupt-driven I/O.
• Bus timing — read and write cycles, wait states, setup and hold, and what a violation looks like on an instrument.
• Memory — RAM, ROM and flash; address decoding; chip select; memory testing algorithms and what each kind of test can catch.
• I/O interfacing — parallel and serial ports, tri-state buses, bus contention and its symptoms.
• Test and measurement — instrument selection, probing technique, triggering, and the difference between what an oscilloscope and a logic analyser can tell you.
• Diagnostic programming — writing code whose purpose is to make a fault visible.
• Analytical troubleshooting — a structured process: symptom, hypothesis, test, halve the search space, confirm. ⚠ The core of the course.
• Documentation — recording a diagnosis, a repair and its verification.

Optional Topics

• In-circuit emulation, JTAG and boundary scan.
• Embedded C and mixed-language development.
• Serial protocol analysis (UART, SPI, I²C).
• Signature analysis and built-in self-test.
• Board-level repair, rework and soldering.
• ESD control and failure analysis.
• Modern microcontroller platforms as a point of comparison.

Resources & Tools

• The text is normally built around a specific architecture — historically the 8085, 8086, 8051 or 68HC11; more recently a PIC, AVR or ARM Cortex-M part. ⚠ The architecture matters less than students assume. Bus timing, address decoding and the troubleshooting method transfer; the instruction set does not, and does not need to.
• ⚠ The manufacturer's data sheet and technical reference manual are the primary text in this subject, not the textbook. Being able to find a timing diagram and read it is the assessed skill.
• Instruments: digital multimeter, dual-trace oscilloscope, logic probe and pulser, and a logic analyser — the instrument that distinguishes this course from a first microprocessor course.
• Development tools: an assembler, a simulator or emulator, and a programmer for the target device. Free toolchains exist for every common architecture.
• Soldering and rework equipment where the course includes board-level repair, along with ESD-safe practice at the bench.
• Certifications adjacent to this material: CompTIA A+ at the systems end, and the ETA International electronics technician credentials, which test exactly this kind of diagnostic competence.

Career Pathways

• Electrical and Electronics Engineering Technician (SOC 17-3023) — the direct destination.
• Electronic Equipment Installer and Repairer and Electrical and Electronics Repairer, Commercial and Industrial Equipment (SOC 49-2094) — ⚠ where diagnostic skill is the whole job.
• Avionics Technician (SOC 49-2091) — sustained Florida demand on the Space Coast and at the state's maintenance, repair and overhaul operations.
• Medical Equipment Repairer (SOC 49-9062) — ⚠ a well-paid and under-filled speciality; biomedical equipment technicians diagnose exactly these systems, and Florida's hospital density makes it a strong local market.
• Electro-Mechanical and Mechatronics Technician (SOC 17-3024).
• Florida employers: L3Harris (Melbourne and Palm Bay), Lockheed Martin (Orlando), Northrop Grumman (Melbourne and St. Augustine), Jabil (St. Petersburg), the space-launch operations at and around Kennedy Space Center, the hospital systems (AdventHealth, Orlando Health, BayCare) for biomedical roles, and the simulation and training cluster in Orlando.
• ⚠ Diagnostic ability is the durable part of this qualification. Specific architectures go out of production; the ability to take a system apart analytically does not, and it is what separates a technician who can be handed an unfamiliar fault from one who cannot.

Special Information

Offering Notes — offerings and hours, school by school

Institution	Its title	Credits	Contact hours
Hillsborough Community College	Advanced Microprocessors	3	not published

Hillsborough Community College is a Florida College System institution. One institution carries this number, so there is no credit range to resolve within it.

⚠ The 60 contact hours at the top of this guide are derived, not published: the Florida convention for a 3-credit integrated lecture-and-laboratory (C) course, about two hours of lecture and two of laboratory a week. Check the meeting pattern on your own schedule.

⚠ "Maintenance" or "Advanced" — what the title shift means

The statewide title names maintenance; the institutional title names advanced. Both describe the same field, and the statewide definition is broad enough to hold both — it lists assembly language and programming technique alongside diagnostic work.

What the difference predicts is where the assessment weight falls. A maintenance emphasis assesses you on finding faults in systems someone else built. An advanced-microprocessors emphasis assesses you on building and programming more capable systems than the first course did. ⚠ Most courses do both, and the honest advice is to read the syllabus for the balance rather than to infer it from either title.

This is a milder divergence than others in the CET prefix — compare CET2127C, where the statewide and institutional titles name genuinely different subjects, or CET1600, where one college teaches a different vendor's certification track entirely.

Position in the curriculum

A second-year course. No statewide prerequisite is recorded, but the content assumes a great deal: digital fundamentals (CET1112C or equivalent) and a first microprocessor course are effectively required, since the course begins with a complete system and assumes you already know what a flip-flop and an address bus are. ⚠ Do not treat the absent statewide prerequisite as an indication that this is an entry point. It is not.

Articulation and transfer

Statewide numbering guarantees transfer to any Florida public institution offering the same number — ⚠ and with one institution carrying it, that guarantee is narrow in practice, so expect an evaluation rather than an automatic acceptance. Into a B.A.S. or B.S. in Engineering Technology it articulates as intended. ⚠ Into a B.S. in Computer or Electrical Engineering it will generally transfer as elective credit only; those programmes meet their microprocessor requirement with an upper-division course in the EEL or CDA prefix. Confirm with the receiving department before relying on it.

Workload

Budget seven to ten hours a week. ⚠ The laboratory time is unpredictable in a way that catches students out, and it is inherent to the subject: a diagnostic exercise takes as long as it takes to find the fault. A session that should take two hours takes four when the hypothesis is wrong, and that is the learning rather than a failure of planning. Do not schedule this course's laboratory against a hard commitment immediately afterwards.

AI Integration

This course is an unusually clean case for thinking about these tools, because its subject is the reasoning process itself rather than a body of content.

Genuinely useful: explaining an unfamiliar instruction or addressing mode; interpreting a data sheet parameter; suggesting what a class of symptom commonly indicates, as a starting list of hypotheses; explaining how an instrument's triggering works; commenting and documenting code you wrote; and drafting the written part of a repair report.

Where the tools fail: models mix instruction sets between architectures and produce assembly that will not assemble, or that assembles and misbehaves. They misstate timing parameters and cycle counts. They invent register names and bit fields that read exactly like real ones. ⚠ Timing is the dangerous category, because a wrong setup-time figure produces a design that works on the bench and fails intermittently in the field — which is the hardest fault class there is.

⚠⚠ The coincidence at the heart of this course: a language model, asked what is wrong with a system, produces the most statistically common explanation for that symptom. That is precisely the error this course exists to eliminate. The whole discipline of analytical troubleshooting is the refusal to guess — you observe, you form a hypothesis, and then you test it before acting on it. A technician who replaces the part a model suggested has done the thing the course spent a term training them not to do, and they will be wrong often enough to be expensive.

Used correctly, the tool is a hypothesis generator and nothing more. That is a legitimate and useful role — a list of candidate causes is a fine starting point when you are stuck. But the list is the beginning of the process, not the end of it, and every item on it has to be confirmed with an instrument before it justifies a repair. A student who internalises that distinction has learned the most transferable thing this course teaches, and it applies far beyond electronics.

Academic integrity: laboratory diagnosis is demonstrated at the bench and is normally assessed by asking a student to explain what they found and how. That exposes work a student cannot account for immediately. Read your syllabus for the instructor's policy on tool use in code and reports.