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sp0 – a-addr gforth “sp0”
User variable – initial value of the data stack pointer.
sp@ S:... – a-addr gforth “sp-fetch”
sp! a-addr – S:... gforth “sp-store”
fp0 – a-addr gforth “fp0”
User variable – initial value of the floating-point stack pointer.
fp@ f:... – f-addr gforth “fp-fetch”
fp! f-addr – f:... gforth “fp-store”
rp0 – a-addr gforth “rp0”
User variable – initial value of the return stack pointer.
rp@ – a-addr gforth “rp-fetch”
rp! a-addr – gforth “rp-store”
lp0 – a-addr gforth “lp0”
User variable – initial value of the locals stack pointer.
lp@ – addr gforth “lp-fetch”
lp! c-addr – gforth “lp-store”