SiriusHardware
Veteran Member
OK - I found a reference to a 'Subroutine Handler' which was submitted to the British Electronics Hobby Magazine 'Practical Electronics', December 1979, page 69. The issue is available to read online on the 'World Radio History' website (The relevant page of the PDF is page 71) but I don't know if the rules here allow a direct link to the PDF in a post.
If you can find the issue / pages online, locate the paragraph titled 'SC/MP Subroutine stacker' and associated code in fig.7. They describe a mechanism to allow a more CALL and RET like subroutine calling method.
If you can find the issue / pages online, locate the paragraph titled 'SC/MP Subroutine stacker' and associated code in fig.7. They describe a mechanism to allow a more CALL and RET like subroutine calling method.