kitune-san wrote: ↑Wed Aug 16, 2023 1:03 pmEDIT:
Apparently, at the highest speed setting, the write fails (destroys the disk).
Fixed.
https://github.com/kitune-san/PCXT_MiST ... /601-error
Search found 401 matches
- Wed Aug 16, 2023 3:00 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: MiSTer PCXT
- Replies: 1405
- Views: 436473
Re: MiSTer PCXT
- Wed Aug 16, 2023 1:03 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: MiSTer PCXT
- Replies: 1405
- Views: 436473
Re: MiSTer PCXT
last build 10/08 doesn't fix 601 error on boot for me This is a tentative change, but after applying the following commit, the 601 error should no longer occur. https://github.com/kitune-san/PCXT_MiSTer/commit/326d93e4f8d94cb24df4ea86eaa8ba887931c987 pls try it. PCXT.zip EDIT: Apparently, at the highest speed setting, the write fails (destroys the...
- Wed May 10, 2023 3:51 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Freedos HD
- Replies: 2
- Views: 3165
Re: Freedos HD
The description of Quick Start is incorrect.
FreeDOS_HD.img does not work properly when using 8088bios.
If you are using 8088BIOS, please try using other bios.
- Sun Apr 30, 2023 3:10 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
Updated MMC drive options.
- 2023-05-01 000515.png (142.95 KiB) Viewed 3585 times
- 2023-05-01 000559.png (141.99 KiB) Viewed 3585 times
- Sun Apr 30, 2023 3:02 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: FDD Support Based on ao486 Implementation
- Replies: 93
- Views: 22573
Re: FDD Support Based on ao486 Implementation
Perhaps it is an issue that occurs when booting with the setup disk and transitioning to the setup screen.
- Sun Apr 30, 2023 2:12 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: FDD Support Based on ao486 Implementation
- Replies: 93
- Views: 22573
Re: FDD Support Based on ao486 Implementation
FDD does not work properly when using 8086bios with PCXT_20230120.rbf or later release versions. The point of change from PCXT_20230114 to PCXT_20230120 should be investigated. UPDATE: This issue seems to have occurred since commit c063a5635c7137a9b495f2f54237e53b31093ef1. https://github.com/MiSTer-devel/PCXT_MiSTer/commit/c063a5635c7137a9b495f2f5...
- Sun Apr 30, 2023 12:46 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: FDD Support Based on ao486 Implementation
- Replies: 93
- Views: 22573
Re: FDD Support Based on ao486 Implementation
FDD does not work properly when using 8086bios with PCXT_20230120.rbf or later release versions. The point of change from PCXT_20230114 to PCXT_20230120 should be investigated. UPDATE: This issue seems to have occurred since commit c063a5635c7137a9b495f2f54237e53b31093ef1. https://github.com/MiSTer-devel/PCXT_MiSTer/commit/c063a5635c7137a9b495f2f54...
- Sun Apr 30, 2023 7:32 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
That's good 
- Sun Apr 30, 2023 5:39 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
I found some bugs in KFMMC. I will fix it.
- Sun Apr 30, 2023 4:39 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
I use FDISK, which is certainly slow, but I don't feel it is unstable in my environment.
Anyway, I will buy some SD cards and try them out.
- Sat Apr 29, 2023 4:14 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
Fixed a bug in which the read/write command did not return an error status when an error occurred.
Not sure if this will solve the current problem, but I will upload it here.
- Fri Apr 28, 2023 2:39 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
When you have time, please try increasing the value of normal_spi_clock_cycle.
- 2023-04-28 233625.png (25.42 KiB) Viewed 4045 times
in my case...
- 2023-04-28 233843.png (77.38 KiB) Viewed 4045 times
- Fri Apr 28, 2023 2:19 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
In my environment I use 2GB and 32GB cards.
The 2GB card boots successfully.
The 32GB card can be formatted successfully and access FAT, but there is a problem with not being able to boot, which I am investigating.
- Fri Apr 28, 2023 2:10 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
It is strange.
Would the results be the same using this?
- Fri Apr 28, 2023 6:56 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
It may be due to the fact that I fixed the CHS of the drive to h=15 S=63 in this design.
Will reformatting it with a new drive make it usable?
- Wed Apr 26, 2023 4:48 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
Having created a simple assembler, I am creating a program to access the SD card using SPI. However, since this is just replacing a complex combinational circuit with a RAM or ROM block, I am not sure how much of a resource reduction I can expect. Don’t get your hopes up. I’m not that good. ;) No matter, any improvement is good, and for me it is, ...
- Sat Apr 08, 2023 4:54 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
It might be better to replace the KFMMC state machine with a micro sequencer. I've already seen that you've started a new microsequencer project in your GitHub repository ;-) If it is finally applied to SD handling, the more modest, XC6SLX9 -based models will be greatly favoured... and possibly it will be possible to add Adlib sound again, among o...
- Mon Mar 27, 2023 2:00 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
The resources of the original ZXUno FPGA ( Xilinx XC6SLX9 ) are starting to become too scarce for this core, the SD implementation takes up enough space and I had to disable Adlib and Tandy Sound . Also, the 512Kb versions will be limited to the PCXT , not being possible to access the graphics features of Tandy : It might be better to replace the ...
- Mon Mar 27, 2023 1:57 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: PCXT Core Access to Secondary SD Card
- Replies: 105
- Views: 23950
Re: PCXT Core Access to Secondary SD Card
The following changes can be made to stop using the open drain output (change to push-pull output) to speed up the transfer rate. It is working fine in my development environment.(32GB SD + MiSTer) However, releases should be made with caution, as incorrect implementation can damage hardware. https://github.com/kitune-san/PCXT_MiSTer/commit/0ec0d98...
- Mon Mar 20, 2023 3:32 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
By the way, are there any constraints for the direct(?) PS/2 port written in the SDC file?
If not, and if the input results are unstable, writing constraints may improve the issue.
- Sun Mar 19, 2023 9:44 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
Even on the MiSTer, a "keys repetition" occurs when a key is pressed and held down. 5160BIOS is used, a beep sound is also sounded. I don't believe the key repeat function is a problematic behavior. However, stop keyboard input and beeping are problems. This also occurs with MiSTer. (Especially when using the 5160BIOS.) Perhaps this is ca...
- Tue Mar 14, 2023 11:37 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
keyboard repetition...
I do not remember what it was. Sorry.
I'm busy today and tomorrow, so I may not be able to reply.
- Tue Mar 14, 2023 3:01 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
But I'm getting always keyboard controller Failed in the diagnostic BIOSes, while before that change I was passing the test, so not sure If I'm going to implement this modification. Fixed. To sum up, the time between the input of the reset pulse and the generation of the keyboard interrupt was too short. Prior to the modification, the keyboard int...
- Tue Mar 14, 2023 11:55 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
The keyboard error in the diagnostic BIOS also occurred on my patched MiSTer. (https://github.com/kitune-san/PCXT_DeMi ... 9fa62f72d2)
I will take a look at the waveforms a bit and report back if I can find a countermeasure.
- Tue Mar 14, 2023 6:50 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
The reason for the error in diagnostic BIOS is not clear without seeing the waveform.
Also, if the transfer rate of the PS/2 keyboard is fast and stuck, it is still necessary to drop the clock to low after reception.
Or add a keycode FIFO.
- Tue Mar 14, 2023 6:15 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
- Replies: 125
- Views: 29562
Re: Extend PCXT Development to Improve MiSTer Core (DeMiSTify Ports)
I'm beginning remember. I think at the time I was only thinking of running it on MiSTer. The PS/2 module uses 4 signals (ps2_kbd_clk_out, ps2_kbd_clk_in, ps2_kbd_data_out, ps2_kbd_data_in) in MiSTer. This is different from the actual bidirectional signals. Perhaps in MiSTer, ps2_x_in does not go low when the ps2_x_out signal is low. (It stays high)...
- Sun Mar 12, 2023 4:03 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: POST Error 101 on CTRL-ALT-DEL
- Replies: 5
- Views: 3146
Re: POST Error 101 on CTRL-ALT-DEL
kitune-san wrote: ↑Sun Mar 12, 2023 3:24 pmIn addition, adding the following commits will eliminate the 101 error.
However, keyboard input during diagnostics will cause the keyboard to get stuck.https://github.com/kitune-san/PCXT_MiST ... 00966f4b0f
Probably difficult to improve further.
Hmmm. Sometimes the keyboard stops working. (e.g. Area5150) 
- Sun Mar 12, 2023 3:24 pm
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: POST Error 101 on CTRL-ALT-DEL
- Replies: 5
- Views: 3146
Re: POST Error 101 on CTRL-ALT-DEL
I am currently trying to come up with a solution. However, these solutions may affect other behaviors. Therefore, this issue may remain for the time being. Even when 101 does not occur, I have experienced the 601 error or the keyboard not working. These are resolved in the following branches. https://github.com/kitune-san/PCXT_MiSTer/tree/428f1ac4...
- Sun Mar 12, 2023 11:31 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: POST Error 101 on CTRL-ALT-DEL
- Replies: 5
- Views: 3146
Re: POST Error 101 on CTRL-ALT-DEL
Even when 101 does not occur, I have experienced the 601 error or the keyboard not working.
These are resolved in the following branches.
- Sun Mar 12, 2023 11:21 am
- Forum: IBM PC, PCXT, Tandy 1000
- Topic: POST Error 101 on CTRL-ALT-DEL
- Replies: 5
- Views: 3146
Re: POST Error 101 on CTRL-ALT-DEL
As part of the BIOS diagnostics, there is an IMR test for the 8259A. In that test, when IMR = 0h and Timer 0 output = H, the issue seems to occur. In other words, the timing at which CTRL-ALT-DEL is input determines whether 101 occurs or not. The 8259 test in the normal reset state is before Timer 0 starts counting, so no interrupt is generated eve...