46nori/z80atmega128

Real Z80A system with I/O emulated by AVR(ATmega128)

z80atmega128's Issues

Patch failure of CPM3-LDRBIOS.patch

Makefile fails with the following error during generating CP/M 3 image disk.

vscode@Z80ATmega128:/z80/cpm3/image$ make

...

patch -i CPM3-LDRBIOS.patch ./tmp/cpm3on2/LDRBIOS.ASM
patching file ./tmp/cpm3on2/LDRBIOS.ASM
Hunk #1 FAILED at 110 (different line endings).
1 out of 1 hunk FAILED -- saving rejects to file ./tmp/cpm3on2/LDRBIOS.ASM.rej
make: *** [Makefile:89: tmp/cpm3on2] Error 1

Patch failure of CPM22-asz80.patch

Makefile fails with the following error during generating CP/M 2.2 system.

vscode@Z80ATmega128:/z80/cpm22/sys$ make

...

patch -i CPM22-asz80.patch -o tmp/cpm22.asm tmp/CPM22.Z80
patching file tmp/cpm22.asm (read from tmp/CPM22.Z80)
Hunk #1 FAILED at 11 (different line endings).
Hunk #2 FAILED at 48 (different line endings).
Hunk #3 FAILED at 83 (different line endings).
Hunk #4 FAILED at 195 (different line endings).
Hunk #5 FAILED at 224 (different line endings).
Hunk #6 FAILED at 376 (different line endings).
Hunk #7 FAILED at 385 (different line endings).
Hunk #8 FAILED at 397 (different line endings).
Hunk #9 FAILED at 421 (different line endings).
Hunk #10 FAILED at 458 (different line endings).
Hunk #11 FAILED at 475 (different line endings).
Hunk #12 FAILED at 492 (different line endings).
Hunk #13 FAILED at 518 (different line endings).
Hunk #14 FAILED at 536 (different line endings).
Hunk #15 FAILED at 547 (different line endings).
Hunk #16 FAILED at 581 (different line endings).
Hunk #17 FAILED at 611 (different line endings).
Hunk #18 FAILED at 630 (different line endings).
Hunk #19 FAILED at 666 (different line endings).
Hunk #20 FAILED at 680 (different line endings).
Hunk #21 FAILED at 700 (different line endings).
Hunk #22 FAILED at 725 (different line endings).
Hunk #23 FAILED at 794 (different line endings).
Hunk #24 FAILED at 810 (different line endings).
Hunk #25 FAILED at 820 (different line endings).
Hunk #26 FAILED at 848 (different line endings).
Hunk #27 FAILED at 886 (different line endings).
Hunk #28 FAILED at 896 (different line endings).
Hunk #29 FAILED at 911 (different line endings).
Hunk #30 FAILED at 994 (different line endings).
Hunk #31 FAILED at 1016 (different line endings).
Hunk #32 FAILED at 1052 (different line endings).
Hunk #33 FAILED at 1065 (different line endings).
Hunk #34 FAILED at 1078 (different line endings).
Hunk #35 FAILED at 1093 (different line endings).
Hunk #36 FAILED at 1149 (different line endings).
Hunk #37 FAILED at 1187 (different line endings).
Hunk #38 FAILED at 1197 (different line endings).
Hunk #39 FAILED at 1205 (different line endings).
Hunk #40 FAILED at 1240 (different line endings).
Hunk #41 FAILED at 1281 (different line endings).
Hunk #42 FAILED at 1309 (different line endings).
Hunk #43 FAILED at 1361 (different line endings).
Hunk #44 FAILED at 1373 (different line endings).
Hunk #45 FAILED at 1410 (different line endings).
Hunk #46 FAILED at 1433 (different line endings).
Hunk #47 FAILED at 1445 (different line endings).
Hunk #48 FAILED at 1457 (different line endings).
Hunk #49 FAILED at 1465 (different line endings).
Hunk #50 FAILED at 1486 (different line endings).
Hunk #51 FAILED at 1507 (different line endings).
Hunk #52 FAILED at 1681 (different line endings).
Hunk #53 FAILED at 1761 (different line endings).
Hunk #54 FAILED at 2040 (different line endings).
Hunk #55 FAILED at 2079 (different line endings).
Hunk #56 FAILED at 2149 (different line endings).
Hunk #57 FAILED at 2165 (different line endings).
Hunk #58 FAILED at 2191 (different line endings).
Hunk #59 FAILED at 2271 (different line endings).
Hunk #60 FAILED at 2292 (different line endings).
Hunk #61 FAILED at 2313 (different line endings).
Hunk #62 FAILED at 2324 (different line endings).
Hunk #63 FAILED at 2338 (different line endings).
Hunk #64 FAILED at 2358 (different line endings).
Hunk #65 FAILED at 2454 (different line endings).
Hunk #66 FAILED at 2467 (different line endings).
Hunk #67 FAILED at 2497 (different line endings).
Hunk #68 FAILED at 2505 (different line endings).
Hunk #69 FAILED at 2525 (different line endings).
Hunk #70 FAILED at 2539 (different line endings).
Hunk #71 FAILED at 2548 (different line endings).
Hunk #72 FAILED at 2566 (different line endings).
Hunk #73 FAILED at 2579 (different line endings).
Hunk #74 FAILED at 2592 (different line endings).
Hunk #75 FAILED at 2803 (different line endings).
Hunk #76 FAILED at 2848 (different line endings).
Hunk #77 FAILED at 2862 (different line endings).
Hunk #78 FAILED at 2912 (different line endings).
Hunk #79 FAILED at 2926 (different line endings).
Hunk #80 FAILED at 2957 (different line endings).
Hunk #81 FAILED at 3111 (different line endings).
Hunk #82 FAILED at 3157 (different line endings).
Hunk #83 FAILED at 3192 (different line endings).
Hunk #84 FAILED at 3237 (different line endings).
Hunk #85 FAILED at 3249 (different line endings).
Hunk #86 FAILED at 3277 (different line endings).
Hunk #87 FAILED at 3285 (different line endings).
Hunk #88 FAILED at 3303 (different line endings).
Hunk #89 FAILED at 3337 (different line endings).
Hunk #90 FAILED at 3403 (different line endings).
Hunk #91 FAILED at 3427 (different line endings).
Hunk #92 FAILED at 3460 (different line endings).
Hunk #93 FAILED at 3552 (different line endings).
Hunk #94 FAILED at 3647 (different line endings).
94 out of 94 hunks FAILED -- saving rejects to file tmp/cpm22.asm.rej
make: *** [Makefile:55: tmp/cpm22.asm] Error 1

Bugfix of PCB Rev1.00

The local labels /WR, /RD for ATmega128 conflicted with the Z80's /WR, /RD, causing unintended connections on the PCB.

Error in making the disk image due to no `sdcard` definition for mkfs.cpm

The following error occurs with mkfs.cpm on Ubuntu22.04.
cpmtool version is 2.20-2build1.

mkfs.cpm -f sdcard -b ./tmp/cpm22/CPM.SYS DISK00.IMG
mkfs.cpm: unknown format sdcard
make: *** [Makefile:41: DISK00.IMG] Error 1

Countermeasure:
This version doesn't have the definition sdcard in diskdef.
Add the following to the file: /etc/cpmtools/diskdefs.

diskdef sdcard
  seclen 512
  tracks 256
  sectrk 64
  blocksize 8192
  maxdir 256
  skew 0
  boottrk 1
  os 2.2
end

Insufficient document for creating CP/M disk images.

microSD card format should be FAT32

The following in SetupGuide_en.md needed to be corrected. It should be FAT32.

2. Creating a microSD Card
   - Format the microSD card as **FAT16**.

SELDSK of CP/M 2.2 BIOS is very slow.

SELDSK of CP/M 2.2 BIOS is very slow. It causes significant performance reduction at file access across disks.
The root cause is that pf_open() of Petit FatFS takes 2 or 3 seconds.

The AVR Firmware DISK I/O emulation function; OUT_0A_DSK_SelectDisk(), calls it.
This function is executed in an interrupt handler that triggers the Z80's OUT instruction, which causes the Z80 to stop completely.