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Artifact ID: | c7d9fa489faa12669634bde342852fb9d2f61364 |
---|---|
Page Name: | Generating test data |
Date: | 2015-10-09 10:25:14 |
Original User: | jos |
Parent: | c970879df8f82e1dc8f03ac4ebc05eeec4a71436 (diff) |
Intro
Aside from processing assembly source, it can be quite handy to directly generate data for the MegaProcessor simulator.
Categories:
- Rotate/shift and bit test/change instructions
- Intel Hex format
Rotate/shift and bit test/change instructions
File `tools/gen_bitops.lua` generates all the 1088 bit-oriented instructions in mnemonic format.
Intel Hex format
Once a library such as ihex.lua is available,
we can simply fill a table with byte-values, and emit intel-hex records to stdout.
( or use the shell redirect '>' )
--------------------------------------------- -- All bytes from 0x00 .. 0xff require('ihex');local data = {};
for i=0,255 do table.insert(data,i) end
ihex_reset()
for i=0,7 do ihex_datarecord(data,32,(i*32+1) ); end
ihex_endrecord();
-- EOF -- ---------------------------------------------
A somewhat more complicated example...
--------------------------------------------- -- All 2-byte combinations starting from d8 00; d8 01; ... -- up to (and including) ... df fe; df ff; -- (To test disassembly of the bitwise shift/rotate/change/test operations) require('ihex');local data = {};
for instr = 0xd8,0xdf do for postb = 0x00,0xff do table.insert(data,instr); table.insert(data,postb); end end
ihex_reset(); for i=0,15 do for j=0,15 do ihex_datarecord(data,16,i*256+j*16+1); end end ihex_endrecord();
-- EOF -- ---------------------------------------------