Design of Microprocessor Systems: Programming MCS-51 Microcontrollers (Novatskyi, 2015)
A KPI-authored course text that gives a coherent route through the original MCS-51 programmer's model, memory spaces, addressing modes, instruction groups, assembler notation, and small assembly programs. It is useful as a teaching sequence but not as authority for current devices, tools, or vendor status.
This 156-page, department-authored course text is the admissible source in the supplied PMPS-1 folder. It develops the MCS-51 model from the CPU and memory organization through assembler-level programming. GTK uses it as a secondary explanation and verifies architectural details against Intel's original manual and a current Silicon Labs implementation.
Complete PMPS-1 folder audit #
| Material | Classification | Treatment |
|---|---|---|
POSIBNIK_MK51.pdf |
Instructor-authored course text | Read completely, archived, registered, visually audited, and mapped into two MCS-51 topics |
PRMPS/DKR.docx, PMS5.docx, PMS6-7(4 раза).docx, and lab1.docx through lab9.docx |
Completed student assignments and laboratory reports | Excluded entirely; no claim, code, example, table, or visual was used |
The excluded files are not a coverage gap. Their exercises touch interrupts, timers, serial communication, ADC use, display control, and assembly, but those durable subjects are developed independently from primary manuals.
Concept map #
| Source treatment | Durable GTK destination |
|---|---|
| MCS-51 family, CPU blocks, register model, RAM, SFRs, ports, and code/data separation | MCS-51 architecture |
| Instruction formats, direct/indirect/register/immediate/indexed/bit addressing, and instruction groups | MCS-51 addressing and instruction set |
| Oscillator, control logic, I/O pins, timers, serial port, and interrupts | Generic microcontroller system-control and peripheral topics, verified independently |
| Assembly syntax, directives, translation, and debugging workflow | assembly toolchain |
What carries weight #
The strongest chapters explain the unusual parts of the programmer's model: four register banks inside internal RAM, bit-addressable RAM and SFRs, the split code/data address spaces, the roles of A, B, DPTR, SP, and PSW, and the way an addressing form constrains the usable memory space. Those mechanisms are stable because present-day MCS-51-compatible cores still expose the architectural contract even when their implementation is faster and their peripheral set is larger.
The worked assembly fragments are useful for reading old firmware, but GTK does not copy them. A durable explanation should show how an operand is selected, which state changes, and why a particular form is valid; it should not make one assembler's directives or one classroom program look architectural.
Current-use boundary #
- The original 12-clock machine-cycle timing is not universal. Modern compatible cores may retire instructions in one or a few clocks while preserving instruction semantics.
- Peripheral registers outside the architectural core are device-specific. A generic
8051register map must never be substituted for an EFM8 or another derivative's reference manual. - Manufacturer lists, part availability, development tools, and recommended workflows in a 2015 course are not current authority.
- Electrical limits, clock sources, reset thresholds, programming voltages, and pin functions always come from the exact device data sheet and revision.
Visual audit #
All 156 pages were rendered and inspected. The information-bearing visuals fall into four groups:
- Core and system block diagrams establish the relation among ALU, control, registers, memory, ports, timers, and serial logic. GTK redraws a smaller architecture view verified against Intel and Silicon Labs.
- RAM, SFR, and register maps are essential because MCS-51's address-space overlap is resolved by instruction semantics. GTK preserves the distinction in an independent memory-space diagram.
- Instruction-format and addressing diagrams help connect opcode fields to operand selection. GTK replaces the source's catalogue presentation with an operand-routing model.
- Program listings and tool screenshots are examples of a particular teaching environment, not durable architecture. They are not retained.
No source image, table, program, or numerical example was copied into a topic entry.