DOS/VSE Assembler Language
As one customer put it, Everything in these books has changed except the assembler language. So if you need to learn mainframe assembler language for either the MVS or VSE operating system, these books are still as useful as any other books we've seen.
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An introduction to DOSVSE
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assembler language assigned base register binary bits block branch bytes called causes chapter character command complete condition contains contents count decimal defined definitions device digit disk edit entry error example executed field figure flowchart followed format four functions given illustrate indicates input instruction ISAM file label length linkage loaded logical macro master means methods module moved object oooo operand operation Optional output packed positions presents printed printer processing record refer relative result routine SAVE sequence sequential shows specified standard statement storage stored structure subprogram subroutine symbol tion topic track unit VSAM write zero