Download Programming in Z80 Assembly Language by Roger Hutty (auth.) PDF

By Roger Hutty (auth.)

Show description

Read Online or Download Programming in Z80 Assembly Language PDF

Similar bibliographies & indexes books

HIV AIDS in Young Adult Novels: An Annotated Bibliography

Now not lengthy after changing into public well-being matters within the Nineteen Eighties, HIV and AIDS have been featured in a few works of fiction, even though such titles have been written essentially for grownup readers. Mirroring the disease's indiscriminate nature, although, the topic may quickly be integrated into novels aimed toward teenagers.

Catalogue of English Bible Translations: A Classified Bibliography of Versions and Editions Including Books, Parts, and Old and New Testament Apocrypha ... and Indexes in Religious Studies)

Whereas different Bible catalogs can be found, this entire reference booklet is destined to develop into the traditional within the box. Chamberlin's one-volume paintings lines the booklet background of a number of variations of Bible translations and gives useful decriptive annotations. The catalog not just comprises entire Bibles, but additionally outdated and New Testaments, partial texts, commentaries that come with translations, kid's Bibles, Apocryphal writings, and the Koran, to boot.

Cultural Anthropology

The most recent version of a big literature consultant presents citations and informative annotations on quite a lot of reference resources, together with manuals, bibliographies, indexes, databases, literature surveys and experiences, dissertations, publication reports, convention lawsuits, awards, and employment and supply resources.

Extra info for Programming in Z80 Assembly Language

Example text

6 JUMP TABLES A jump table is a convenient way of executing one of several program segments depending on the value of a variable which has sequential values 1 to N. The basis of the technique is as follows JPTAB: rp contains JPTAB + 3 x (N - 1) JP ( rp) JP JP N1CODE N2CODE start of jump table JP NNCODE end of jump table Before the jump table can be used, one of·the IX, IY or HL register pairs must contain the address of one of the JP instructions in the jump table. A JP (rp) instruction is then executed which causes one of the JP instructions in the jump table to be executed.

1 computes A LD LD NEXBIT: SRL JP ADD NOADD: JR DEC JR SLA JR =B x C A,O D,l C test next bit of multiplier NC,NOADD A,B PO,OVEKFL add in multiplicand D Z,DONE B shift multiplicand NEXBIT The program segment deals only with , pos i t i ve signed numbers . It would have to be extended to deal with negative signed numbers. One straightforward method of doing this is first to mult iply the absolute values of the two numbers and then compute the sign of the product according to the signs of the numbers.

The DEFM and DEFB pseudo operators can be mixed to produce strings of characters which contain control codes. For example, the character string MESS12: DEFM DEFB DEFB DEFM 'FIRST LINE' ODH OAR 'SECOND LINE' CR code LF code Nested Loops and Addressing Modes 37 if output as one string would cause FIRST LINE SECOND LINE to be dis played. 4 TEXT OUTPUT When only one, two or three characters are being output to the display it is normal to output them with separate sets of statements, each of which loads the accumulator with a character and calls COUTo However, for three or more characters this would be a very inefficient way to output them to the display.

Download PDF sample

Download Programming in Z80 Assembly Language by Roger Hutty (auth.) PDF
Rated 4.14 of 5 – based on 6 votes