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| From | awanderin <awanderin@gmail.com> |
| Newsgroups | comp.sys.apple2 |
| Subject | Re: Uthernet II Assembly Listing Questions |
| Date | Sat, 09 Jan 2016 00:02:20 -0700 |
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ultramagnus_tcv <mikew@thecomputervalet.com> writes:
> On 2016-01-08 07:47:15 +0000, awanderin said:
>
>>> IIRC, $ = Memory Location, #$ = enter value (Hex). Is #6 = enter value
>>> (dec)?
>>
>> Yes, $ in front means hex, % means binary (0s and 1s), nothing means
>> decimal.
>
> Thank you, Jerry.
>
> But what is: #6?
The # indicates immediate mode. What this means is that the operand
value itself is loaded into the register (for LDA/LDX/CPY), or whatever
other operation the mnemonic determines (CMP/SBC/EOR/AND, you get the
idea).
With other addressing modes, the operand value is a memory address from
which the value is fetched before performing the operation.
LDA #xxx
loads the value xxx into the accumulator. If xxx == "$10", then 16
(base-10) is loaded. If xxx == "10", then 10 (base-10) is loaded. In
Merlin, if xxx == "%1011", then 11 (base-10) is loaded.
Conversely, all these examples below load the contents of memory address
64 into the accumulator:
lda $40
lda 64
lda %1000000
--
--
Jerry awanderin at gmail dot com
Back to comp.sys.apple2 | Previous | Next — Previous in thread | Next in thread | Find similar
Uthernet II preferred slot Steven Nelson <steven-nelson@uiowa.edu> - 2016-01-02 12:08 -0800
Re: Uthernet II preferred slot "Bill Garber" <willy46pa@comcast.net> - 2016-01-02 18:28 -0500
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-03 10:42 -0600
Re: Uthernet II preferred slot Ken C <arizonakenwc@gmail.com> - 2016-01-04 05:42 -0800
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-04 15:13 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-04 10:49 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-04 18:37 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-04 13:45 -0600
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-04 17:53 -0600
Re: Uthernet II preferred slot David Schmidt <schmidtd@my-deja.com> - 2016-01-04 20:54 -0500
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-05 21:22 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-05 19:32 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-06 17:58 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-06 16:45 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-07 20:49 +0000
Re: Uthernet II preferred slot David Schmidt <schmidtd@my-deja.com> - 2016-01-07 16:05 -0500
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-07 21:21 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-07 18:54 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-08 17:56 +0000
Re: Uthernet II preferred slot spectrumdaddy@nospam.com (Ewen) - 2016-01-08 07:31 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-08 09:52 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-08 18:09 +0000
Re: Uthernet II preferred slot spectrumdaddy@nospam.com (Ewen) - 2016-01-09 08:09 +0000
Re: Uthernet II preferred slot spectrumdaddy@nospam.com (Ewen) - 2016-01-09 08:17 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-06 18:36 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-07 20:57 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-07 18:06 -0600
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-08 18:07 +0000
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-08 16:44 -0600
Re: Uthernet II preferred slot Jeff Blakeney <CUTjeffrey_blakeney@yahoo.ca> - 2016-01-08 15:25 -0500
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-08 16:43 -0600
Uthernet II Assembly Listing Questions (was: Re: Uthernet II preferred slot) ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-07 18:54 -0600
Re: Uthernet II Assembly Listing Questions awanderin <awanderin@gmail.com> - 2016-01-08 00:47 -0700
Re: Uthernet II Assembly Listing Questions ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-08 09:51 -0600
Re: Uthernet II Assembly Listing Questions ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-08 10:28 -0600
Re: Uthernet II Assembly Listing Questions Raymond Wiker <rwiker@gmail.com> - 2016-01-08 20:46 +0100
Re: Uthernet II Assembly Listing Questions Michael J. Mahon <mjmahon@aol.com> - 2016-01-09 12:38 -0600
Re: Uthernet II Assembly Listing Questions ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-09 15:00 -0600
Re: Uthernet II Assembly Listing Questions awanderin <awanderin@gmail.com> - 2016-01-09 00:02 -0700
Re: Uthernet II Assembly Listing Questions ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-09 09:05 -0600
Re: Uthernet II preferred slot ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-01-08 18:38 -0600
Re: Uthernet II preferred slot ol.sc@web.de (Oliver Schmidt) - 2016-01-19 20:37 +0000
Re: Uthernet II preferred slot Steven Nelson <steven-nelson@uiowa.edu> - 2016-01-04 10:41 -0800
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-04 18:47 +0000
Re: Uthernet II preferred slot Steven Nelson <steven-nelson@uiowa.edu> - 2016-01-04 15:21 -0800
Re: Uthernet II preferred slot D Finnigan <dog_cow@macgui.com> - 2016-01-05 21:16 +0000
Re: Uthernet II preferred slot Delfs <eeastman@gmail.com> - 2016-01-05 03:24 -0800
Re: Uthernet II preferred slot MarkO_ <apple2@markoverholser.com> - 2016-01-13 13:55 -0600
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