SjASMPlus от z00m

[Ped7g]

так же невозможно организовать выход из такой процедуры
так как последний ix должен вести на выход

That screenshot: so you did want "C019 ld ix,C023" to make "C00B" procedure return AFTER the "di:halt", right?
And the final "C046 ld ix,C04D" should be "ld ix,someExit"?

well, the second part is easy, just: ".100 callNoSp ix,proc" turns to ".99 callNoSp ix,proc" + "ld ix,exit : jp proc"

but the first part is changing the task completely, so you don't want to IX="after `jp proc`", but you need IX="ahead of next code block".

If I understand you correctly now.