Subject: Re:
Date: Mon, 25 Mar 2002 19:47:21 -0800
From: Minoru Hasegawa <hasegawa@wadanet.com>
To: xu sword <xusword@hotmail.com>

Hi
(1) One problem in storing a program and data in PROM is:
the software stores programs from address 0 onward:
so it is difficult to allocate a number in the address 100.
If you were to use PROM for testing, use the address just below
your program, 015-019, for data at 100-104.
(2) "ldg" is OK but "sdg" is not .
Happy computing !
Minoru Hasegawa
MH


xu sword wrote:

> hi, Dr. Hasegawa:
>
> I had finished all machine instructions wiring, and I wrote a program to
> test it, but I have two problems:
>
> 1. I am not really sure how to store constant number to PROM. For example,
>
> if I want to store number FFFD into address 100, what do I do?
>
> 2. Can instructuon SDG work  with PROM?
>
> by the way, this is my test driver
>
> varibles:
>
> 100 FFFD
> 101 0001
> 102 0002
> 103 03F2
> 104 000E
>
> program (assemble code)
>
> 000 LDG[100]
> 001 ADD[101]
> 002 AND[102]
> 003 XOR[103]
> 004 LOR[104]
> 005 NOT
> 006 ROL
> 007 NOP
> 008 JMP[00A]
> 009 HLT
> 00A LDG[100]
> 00B ADD[101]
> 00C JMI[00B]
> 00D SRJ[012]
> 00E HLT
> 00F NOP
> 010 NOP
> 011 NOP
> 012 KTG
> (013 INJ[104])
> 013 SDG[200]
> 014 INJ[200]
>
> progrom(machine code)
> 6100
> 1101
> 3102
> 2103
> 4104
> 5000
> D000
> F000
> A00A
> 0000
> 6100
> 1101
> 900B
> 8012
> 0000
> F000
> F000
> F000
> E000
> (B104)
> 7200
> B200
>
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