RCZ80-PC project - my progress

[Rodney Knaap]

Hello everyone,

I thought maybe it's nice to write something of my progress in this project here.

I just finished point-to-point soldering the PPIDE PCB for my RCZ80-PC project, and at the first attempt, right away it's working perfectly!

This is my boot with only the CPU/serial PCB, ROMWBW and PPIDE controller:

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RomWBW HBIOS v3.1.1-pre.119, 2021-10-08

RC2014 Z80 @ 7.372MHz
0 MEM W/S, 1 I/O W/S, INT MODE 1, Z2 MMU
512KB ROM, 512KB RAM
ROM VERIFY: 00 00 00 00 PASS

ACIA0: IO=0xA0 ACIA MODE=115200,8,N,1
DSRTC: MODE=STD IO=0xC0 NOT PRESENT
MD: UNITS=2 ROMDISK=384KB RAMDISK=256KB
FD: MODE=RCWDC IO=0x50 50 NOT PRESENT
IDE: IO=0x10 MODE=RC
IDE0: NO MEDIA
IDE1: NO MEDIA
PPIDE: IO=0x20
PPIDE0: LBA BLOCKS=0x0003E800 SIZE=125MB
PPIDE1: NO MEDIA

Unit        Device      Type              Capacity/Mode
----------  ----------  ----------------  --------------------
Char 0      ACIA0:      RS-232            115200,8,N,1
Disk 0      MD0:        RAM Disk          256KB,LBA
Disk 1      MD1:        ROM Disk          384KB,LBA
Disk 2      IDE0:       Hard Disk         --
Disk 3      IDE1:       Hard Disk         --
Disk 4      PPIDE0:     CompactFlash      125MB,LBA
Disk 5      PPIDE1:     Hard Disk         --


RC2014 Boot Loader
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I had already formatted a CF card for testing before, and right away it can boot, and all slices are accessible and contain valid files!

This is a big step forward again!

I slightly modified the I/O address decoder circuits which works well too.

I am starting to like this project more and more!

ROMWBW is a really great concept. When I came across it, I included it right away!

Here's a photo of the test setup:

My web page about this project can be found here:

https://www.knaapic.nl/wordpress/hobby/rc2014-modulaire-z80-computer

I will update that page later when I have more progress to report.

Now I will be moving on to the TMS 9918 composite video output PCB!

I'm quite curious to see the display output!

All these PCBs including the RCWDC floppy drive controller and several other PCBs will be further modified and integrated into my RCZ80-PC mainboard PCB design.

Kind regards,

Rodney