Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08398 Gameplay Major Always Aug 16, 2022, 03:29 Aug 21, 2022, 20:56
Tester xolson View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10/11 (64-bit)
Status [?] Confirmed Driver
Version 0.246 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08398: apple3: Softcard /// CP/M version 2.21 runs very slowly
Description CP/M 2.20 runs just fine on the Apple 3 with a Microsoft Softcard /// in a slot. However, the update to 2.21 incorporated changes that appears to slow to a crawl on mame, but not on real hardware. There is about a 1/2 second delay between typing characters and them appearing on the screen. Any program that displays lines of text on the screen seems to pause between lines.
Steps To Reproduce mame apple3 -skip_gameinfo -sl4 softcard3 -flop1 e:\apple3\A3CPM221MASTER.dsk

Try some commands, CAT, DIR, CONFIG and notice the slowness.
I am attaching the (hard to find on the internet) A3CPM221MASTER.dsk for testing purposes,
Additional Information
Github Commit
Regression Version
Affected Sets / Systems apple3
Attached Files
There are no relationship linked to this issue.
User avatar
Aug 16, 2022, 03:42
Please do not upload copyright material.
User avatar
Aug 19, 2022, 22:44
Apologies for the image deletion. Could you provide the image for this report via MAMEDEV's submission email listed at the site linked below and note the MT REPORT number and circumstances as well?

As you mentioned, the available 2.2 version seems to boot and function properly and quick search has not discovered 2.21 for testing.
User avatar
Aug 20, 2022, 05:08
The floppy disk image has been submitted by the method you wanted and thanks for looking into this.
User avatar
Aug 21, 2022, 20:55
With the image I can see how typing is delayed and, all the while the emulation speed reads 100%, it is not performing as 2.20 does.