[Coco] Nitros9 irqs command

Tim Fadden t.fadden at cox.net
Mon Mar 30 17:57:00 EDT 2009


Thanks Bob.

Tim

Bob Devries wrote:
> Tim,
> this discrepancy is normal.
> Although the memory address range of your serial port starts at $FF54, 
> the STATUS register is one byte higher at $FF55.
>
> -- 
> Regards, Bob Devries, Dalby, Queensland, Australia
>
> Isaiah 50:4 The sovereign Lord has given me
> the capacity to be his spokesman,
> so that I know how to help the weary.
>
> website: http://www.home.gil.com.au/~bdevasl
> my blog: http://bdevries.invigorated.org/
>
> ----- Original Message ----- From: <t.fadden at cox.net>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Tuesday, March 31, 2009 5:33 AM
> Subject: [Coco] Nitros9 irqs command
>
>
>> I was trying out the "irqs" command from the latest Nitros9 dist, and 
>> got this:
>>
>>      {t2|03}/X0:irqs
>>
>>      Polling  Table at: 6CFB
>>      Device  Table at: 6B00
>>
>>       Device     Driver   IRQ     Flip
>>      Port Mem   Name  Vector  &Mask  Pty
>>      ----   ----  -----------------  ------    ---
>>      FF55 5800  sc6551  E2CE  00 88    0A
>>
>> {t2|03}/X0:xmode /t2
>>  nam=t2 mgr=SCF ddr=sc6551 hpn=07 hpa=FF54 upc=00 bso=01 dlo=00
>>  eko=01 alf=01 nul=00 pau=01 pag=18 bsp=08 del=18 eor=0D
>>  eof=1B rpr=04 dup=01 psc=17 int=03 qut=05 bse=08 ovf=07
>>  par=00 bau=06 xon=11 xof=13 col=50 row=18 xtp=00 wnd=00
>>  val= sty= cpx= cpy= fgc= bgc= bdc=
>> {t2|03}/X0:help irqs
>> irqs: no help available
>>
>> I noticed that the port number listed in the irqs output did not 
>> match the port number of the xmode output of the device in question.
>>
>> Is this a normal offset, or something not set up or working properly, 
>> bug etc.?
>>
>> As you can see from the prompt, the device is working properly! :-)
>>
>>
>> Any comments welcome.
>>
>> Tim Fadden
>>
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>
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