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Left alone, the eZ80 will continuously execute this instruction, cycling through its address space since the stack pointer will be constantly decremented. This can be detected with a multimeter set to frequency measurement, if you're interested: just probe some address pins. The ZDI protocol built into the eZ80 lets us take
Everything you ever needed to know about eZ80 programming for the TI-84+ CE.
What is assembly?¶. Assembly is a very powerful language that you can use on your TI-84+CE! When you write in assembly, you write in a human readable form of machine code, which allows you to create quicker programs that can access and do more than TI-BASIC. Mistakes in assembly can be messier than in
Dual Stack Pointers for ADL (24-bit) and Z80 (16-bit) memory modes. • 24-bit CPU registers and ALU (Arithmetic Logic Unit). • Debug support. • Nonmaskable Interrupt (NMI), plus support for 128 maskable vectored interrupts. For more information about the eZ80 CPU and its instruction set, refer to the eZ80 CPU.
23 авг 2013 Читать работу online по теме: eZ80 CPU user manual.2003. ВУЗ: СПбГЭТУ. Предмет: Электротехника. Размер: 4.73 Mб.
change in native Z80 or virtual Z80 with ADL cleared to zero or with ADL set to one the application can take advantage of the eZ80's 16-Mbyte linear addressing space and enhanced instruction set. These operating modes are governed by: • The Address and Data Long (ADL) mode bit, and. • An 8-bit register called MBASE.
The eZ80 CPU's instruction set is a superset of the instruction sets for the Z80 and Z180. CPUs. The Z80 and Z180 programs are executed on an eZ80 CPU with little or no modifi- cation. The eZ80 CPU is combined with peripherals, I/O devices, volatile and nonvolatile memory, etc., for various eZ80 CPU products within the
Welcome to eZ80 Heaven!¶. Contents: Tutorials. Introduction to Assembly · What is assembly? Setting up · Program Structure · Hex, Binary, and Decimal · Registers and Indirection · The Registers · Addresses · Indirection · Labels · Romcalls · Hooks. Instruction Set. Arithmetic Instructions · ADC · ADD · CP · DAA · DEC · INC.
1 Apr 2017 _HomeUp isn't in the System Routines file, but it and _ClrScrnFull set up for the text output by resetting the screen. ld hl,TutorialText eZ80 Heaven, Release 1.0. Allowed Instructions. Instruction. Opcode. CC (ADL/non-ADL) CC (.S) CC (.L) adc a,a. $8F. 1F. X. X adc a,b. $88. 1F. X. X adc a,c. $89. 1F. X. X.
The instructions LD A,R and LD A,I affect the Z80 flags register, unlike all the other LD (load) instructions. The Sign (bit 7) and Zero (bit 6) flags are set according to the data loaded from the Refresh or Interrupt source registers. For both instructions, the Parity/Overflow flag (bit 2) is set according to the current state of the IFF2
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