In Marie assembly, how can I declare a specific address as a variable?
x should have a value of hex 2c
and value should be at address 0015
Currently, I have code:
load x
add x \ 2x
store x
halt
x, hex 2c
I could load 2c
to the accumulator, and store it at address 0015
, but is there any other way?
Apparently proper command is
org hhh
wherehhh
are hex digits, and there must be 3 of them — so, for 1516 need to useorg 015
, or for 1510 thenorg 00F
.I have tested this on marie.js; it gives the error
unknown operator org
if 3 digits are not supplied.Sadly, fyi, I'm having trouble using
org
in any position except first, i.e. in front of all the code & data. So, if you want to put the code ahead of the data, that's going to be difficult without counting lines of code. The followingorg
usage will placex
at 0x015.Alternately, you might do the following:
Though this will place the code after the data, it involves only counting one line of code, i.e. the
jump start
.Note: marie.js will load the initial PC with the org location, so you can relocate code & data to anywhere and it will still start the simulation at the beginning of that code & data.