stack of plates

Four plates go into the frame, and they come back out top-first: store 21, 34, 55, 89 into the four named stack slots, then load and print them in reverse order.

The starter's frame is already sized with the course's alignment formula, and each slot has a named offset. Your job is the strStore to memory. Same addressing modes as LDR.s going in and the ldrLoad from memory. Picks 32-vs-64 bit based on Wt/Xt.s coming out; the printing order is what makes it a stack.

what is checked

• four lines: 89, 55, 34, 21
• the program exits cleanly
• the values make a round trip through memory (strStore to memory. Same addressing modes as LDR. and ldrLoad from memory. Picks 32-vs-64 bit based on Wt/Xt. both present)