Echelon Neuron - Manual (Page 113)

base page register (BP) into NEXT on the data stack. This instruction
modifies NEXT but preserves TOS.
The PUSH instruction applies to Series 3100, 5000, and 6000 devices.
Syntax:
The PUSH instruction requires one or two operands to specify which data stack
value to pop and the location into which to store the value:
PUSH [0][offset]
PUSH [1][offset]
PUSH [2][offset]
PUSH [3][offset]
PUSH [0][TOS]
PUSH [1][TOS]
PUSH [2][TOS]
PUSH [3][TOS]
PUSH FLAGS
PUSH RSP
PUSH DSP
PUSH [DSP][-8]
PUSH [DSP][-7]
PUSH [DSP][-6]
PUSH [DSP][-5]
PUSH [DSP][-4]
PUSH [DSP][-3]
PUSH [DSP][-2]
PUSH [DSP][-1]
PUSH address
PUSH TOS
PUSH NEXT
PUSH #number
PUSH !8
PUSH !9
PUSH !10
PUSH !11
PUSH !12
PUSH !13
PUSH !14
PUSH !15
PUSH !16
PUSH !17
PUSH !18
PUSH !19
PUSH !20
PUSH !21
PUSH !22
PUSH !23
Neuron Assembly Language Reference 103