No-Slot Clock: Hit PTRIG to slow ZIP/IIc+ accelerator before reading

This appears to improve reliability when reading the NSC on the
IIc+. More data is probably needed before declaring this a really
good solution, but "it works on my machine!"
This commit is contained in:
Joshua Bell 2023-10-06 22:11:36 -07:00
parent a519d0c619
commit ed2fa6e7d2

View File

@ -278,6 +278,7 @@ loop: lda driver,y
driver:
php
sei
lda PTRIG ; Slow ZIP, IIc+ accelerator, etc
lda $C00B ; Ultrawarp bug workaround c/o @bobbimanners
ld4: lda $CFFF ; self-modified ($CFFF or RDCXROM)
pha