9 110x - Fetch/Store

9 110x - Fetch/Store🔗

(require ledum/bb68/op-11xx-fetch-store)
	package: ledum-bb68

private opcode
(fetch* r N i)

r = bb68-gpr

N = bb68-gprp

   r : (integer-in 0 15)
   N : (integer-in 0 7)
   i : (integer-in 0 63)

mask: e000

value: e000

FETCH Rr <- Rn:Rm + IX

private opcode
(store* N i r)

N = bb68-gprp

r = bb68-gpr

   N : (integer-in 0 7)
   i : (integer-in 0 63)
   r : (integer-in 0 15)

mask: e000

value: c000

STORE Rr -> Rn:Rm + IX

macro opcode
(store variant)

variant = a:bb68-gprp i:bb68-word r:bb68-gpr
| a:bb68-gprp i:bb68-word r:bb68-gprp

Stores (spills) a register or register pair r to a given address a and offset i.

macro opcode
(fetch variant)

variant = r:bb68-gpr a:bb68-gprp i:bb68-word
| r:bb68-gprp a:bb68-gprp i:bb68-word

Fetches (unspills) to a register or register pair r from a given address a and offset i.