physnoct on JTAG-DP Sticky errors when pro…
Tag Archives: assembler
Quite often, we need to send strings to a computer. Usually, there is a section in your code where you define the message with a label: ;string is terminated with null MsgHelloWorld: .asciz “Hello World!\r\n” ;subroutine to print strings putstr: … Continue reading
On several occasions, when programming in assembler, we meet this sequence where the last instruction of a subroutine is a call immediately followed by a return instruction. my_subroutine1: ;some instructions call my_function1 ret my_function1: ;some instructions ret The routine ‘my_function1’ … Continue reading
I finished the math routines and added some others for doing trigs and logs with the CORDIC algorithms. I made it run on a real Z80 and a TRS80 emulator.
I’m currently writing some floating point routines in assembler for the Z80. I started a long time ago with a book from Neill Graham. The title is “Microprocessor Programming for Computer Hobbyists”. Tab Books No. 952 ISBN 0-8306-6952-3. The routines … Continue reading