In chipset/lib/cia.asm the labels are called BANK_0 to BANK_3, whereas in the documentation (section 4.8.1.) it is called BANK3 (without underscore).
In chipset/lib/cia.asm the labels are called BANK_0 to BANK_3, whereas in the documentation (section 4.8.1.) it is called BANK3 (without underscore).