hp2114 basic

[Bob Shannon]

Be careful with HPASM, its very broken!

It does not parse combined opcodes correctly at all.

----- Original Message ----- 
From: "Tim Riker" <Tim at rikers.org>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Monday, March 28, 2005 2:43 PM
Subject: Re: hp2114 basic


> Steve Robertson wrote:
>> Files with the "ABS" extension are compiled files. I don't have the ABS
>> documentation in front of me but the format is not very complex. You can
>> download the cross compiler at:
>> http://oscar.taurus.com/~jeff/2100/emulator/hpasm.c (saves files in ABS
>> format) and figure out exactly what the format is.
> 
> Thanx, I posted later on that I used the perl assember here:
> 
> http://www.brouhaha.com/~eric/software/asm21/
> 
> and got it assembled. The C version above did not work well for me.
> 
>> 
>> The real trick is getting the file loaded into the HP1000. Depending on
>> which I/O cards and loader ROMS you have, you can load the data either
>> serially or in parallel.
> 
> actually I'm using simh at this point. loading the "tape" was no problem 
> at all.
> 
> Now I'm stumped on getting it bootstrapped. Not sure where to put the 
> tty port number info. Does it just want a slot number? looks like simh 
> defaults to tty in slot 11, but I don't understand what the code is 
> looking for:
> 
> PTSBS CLC 0        TURN OFF ALL DEVICES
>       LIA 1        LOAD I/O ADDRESS OF TTY
>       AND .63      MASK TO LOWER 6-BITS
>       STA B        PUT ADDRESS IN B-REGISTER
>       ARS,ARS      SHIFT TO BITS (5-3)
>       ARS
>       SZA          I/O ADDRESS >7?
>       JMP ZGO      YES-INITIALIZE PREPARE BASIC TTY
> *
>       HLT 55B      INVALID I/O ADDRESS HALT
>       JMP PTSBS    TRY AGAIN
> 
> more info on the wiki page:
> 
> http://rikers.org/wiki/FirstComputer
> 
> -- 
> Tim Riker - http://rikers.org/ - TimR at Debian.org
> Linux Technologist - Tim at TI.com - http://www.TI.com/
> BZFlag maintainer - http://BZFlag.org/ - for fun!
>