Propeller Programming: Using Assembler, Spin, and C

© Sridhar Anandakrishnan 2018

Sridhar AnandakrishnanPropeller Programminghttps://doi.org/10.1007/978-1-4842-3354-2_9

9. Compression in PASM with TDD

Sridhar Anandakrishnan¹ 

(1)

Department of Geosciences, University Park, Pennsylvania, USA

 

Let’s convert our Steim compressor to PASM using TDD. The specification in Chapter 5 is written for a “traditional” language where the compression routine is called by the main program (as in our Spin example). As we want to implement the compression routine in PASM, we will start a new cog and will have to perform handshaking , as it is called, between the two cogs as follows (Figure 9-1):

Figure 9-1

Diagram showing ...