Timeline for Using C64 floating point kernal routines with 16 bit integer
Current License: CC BY-SA 4.0
23 events
| when toggle format | what | by | license | comment | |
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| Dec 5, 2022 at 13:20 | history | rollback | Omar and Lorraine |
Rollback to Revision 3
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| Dec 3, 2022 at 0:13 | comment | added | dave | The question was recently edited to change 'kernal' to 'kernel'. Since this is about a Commodore machine, the incorrect spelling was in fact the actual name of the code. Reading 'kernal' causes me physical pain, but it is historically accurate. | |
| S Dec 2, 2022 at 23:36 | history | suggested | Glorfindel | CC BY-SA 4.0 |
typos corrected
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| Dec 2, 2022 at 20:45 | review | Suggested edits | |||
| S Dec 2, 2022 at 23:36 | |||||
| Oct 26, 2018 at 10:05 | answer | added | JeremyP | timeline score: 4 | |
| Oct 26, 2018 at 9:17 | comment | added | JeremyP | @wizzwizz4 I don't think it was either: off topic, possibly (it's a straight programming question), but not unclear and not too broad. | |
| Oct 25, 2018 at 14:46 | history | edited | Raffzahn | CC BY-SA 4.0 |
clarified
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| Oct 25, 2018 at 13:02 | comment | added | wizzwizz4♦ | @JeremyP Sorry about that; I was 50/50 between "unclear" and "too broad" but chose "too broad" because it had a more fitting default message. | |
| Oct 25, 2018 at 12:56 | comment | added | wizzwizz4♦ | @Digerkam This site is actually "a museum", as you put it. That's actually a pretty good description! The page, answers, and comments are here for collecting information for people who have this question in future. If you have further concerns, please raise a moderator flag or post a question on Retrocomputing Meta; do not post accusatory comments if you have a problem with someone's behaviour. | |
| Oct 25, 2018 at 12:44 | answer | added | Raffzahn | timeline score: 14 | |
| S Oct 25, 2018 at 12:05 | review | Low quality posts | |||
| Oct 25, 2018 at 15:26 | |||||
| Oct 25, 2018 at 12:02 | history | reopened |
JeremyP Richard Downer Cactus Joe Omar and Lorraine |
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| Oct 25, 2018 at 12:02 | comment | added | Omar and Lorraine | A nitpick: On the C64, the kernal does not do any floating point; only BASIC does. | |
| Oct 25, 2018 at 11:02 | comment | added | Digerkam | @Raffzahn I want to use FP and slowness doesnt matter. Do you have any idea how to convert 16 bit value into FP and get the result into 16 bit value again? | |
| Oct 25, 2018 at 10:24 | comment | added | Raffzahn | @Digerkam The first question here would be why converting it to FP and doing slow FP when the task itself is about an integer multiplication? | |
| Oct 25, 2018 at 10:13 | history | edited | Digerkam | CC BY-SA 4.0 |
Clearification!
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| Oct 25, 2018 at 10:06 | comment | added | JeremyP |
@Digerkam It's a bit difficult to write code in a comment but have a look at the C64 Wiki. The routine at $B391 will convert from 16 bit to floating point and the routine at $B1AA will convert the other way. And there are other routines for the arithmetic ops.
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| Oct 25, 2018 at 10:00 | review | Reopen votes | |||
| S Oct 25, 2018 at 12:05 | |||||
| Oct 25, 2018 at 9:42 | comment | added | JeremyP | I was just in the middle of writing an answer and it's closed as "too broad". There's no way asking how to convert a 16 bit number to floating point on the C64 is too broad. | |
| Oct 25, 2018 at 8:50 | history | closed |
Raffzahn wizzwizz4♦ |
Needs more focus | |
| Oct 25, 2018 at 8:48 | comment | added | wizzwizz4♦ | Please edit your question to make it clearer (what's your actual question?) and ensure it's actually answerable. See How to Ask for guidelines. | |
| Oct 25, 2018 at 8:30 | review | Close votes | |||
| Oct 25, 2018 at 8:50 | |||||
| Oct 25, 2018 at 7:35 | history | asked | Digerkam | CC BY-SA 4.0 |