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    English Sources for CH375DOS.SYS - ISA to USB adapter for Thumb drives

    There are a number of boards available from China originally aimed at industrial use but these 8 bit ISA cards using the WCN CH375 USB host chip together with CH375DOS.SYS allows Dos based PCs to access small Thumb drives as an additonal drive. Are the sources for the driver available (in...
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    IBM 330 6571 conversion to 6573 ie replacing VL-ISA riser with PCI-ISA riser.

    I have a 330 DX2-66 - 6571 which has the 3 slot VL-ISA riser. I would like to convert it to a 6573 ie replace the riser with the 3 slot PCI-ISA riser. There appear to be a number of different 3 slot IBM riser cards. Which is the correct one and are there any other changes needed? Thanks Peter
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    CP/M86 for IBM PC-AT source build kit

    The DRI CP/M 86 Alteration Guide (part of CP/M 86 System Guide) and OEM disks refer to the Intel SBC 86/12, which is decidedly not PC compatible! There were Retail versions of CP/M 86 for the IBM PC-XT and PC-AT. I am interested in porting onto a more modern PC (386 / 486 / Pentium based PC)...
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    IBM PC XT, AT CP/M86 boot sector contents

    I have a CP/M86 disk that will boot on my Thinkpad laptop but not on an Intel d915GAG desktop. On the desktop the ROM bios looks at the Boot sector Track 0, Sector 1 and rejects the disk. On the Thinkpad the Rom bios is happy to boot the disk. Can anyone point me to the source for the BOOT...
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    Apple ii disk operations on 13 spt disks on 16 spt disk ii controller?

    Apple II disk ii controller boards come in old 13 spt and new 16 spt forms. Given that Muffin can transfer files from 13 spt disks onto 16 spt disks using a 16spt controller and that the BASICS disk can boot a 13 sector disk on a 16 spt controller, it is clearly possible atleast to read 13 spt...
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    Information on Chinon F-051 APC Disk ii clone for Apple ii

    I have acquired a Chinon F-051 APC 5.25" drive unit. The unit contains a Chinon F-051MD drive mechanism with a 2 x 10 way IDC connector a la Disk ii. A single sheet of A4, says that it is specially designed to work with APPLE II. But it also claims that it is a 163 Kb formatted capacity (single...
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    DECUS C under RT11 memory requirements?

    I have downloaded a DECUS C dsk image for RT11. However, when I try to run it under simh, KMON-F informs me 'Insufficient memory' I am trying to run it under a simh 11/73 emulation with 4M RAM. I can run AS. .run dl1:cc RT11XM 5.03 - insufficient memory .sh mem Extended memory...
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    Documentation for DEC DUP protocol as used by DEC diagnostics such as XXDP on RQDX3

    Some MSCP Controllers (eg RQDX3) also support DUP for diagnostics. The RQDX3 Controller User Guide mentions 2 DUP functions: Execute local program - runs a program stored in ROM. Execute supplied program - loads a program into RAM and starts executing it. In the glossary of supported...
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    Rules for writing and executing downloadable code onto RQDX3 T11

    Is anybody aware of any documents that give guidance on writing code for embedded T11 s such as on RQDX3 controller cards? In particular I am looking for: 1) How to download code onto RQDX3 - checksums, execution addresses, handshaking 2) Any Interrupt rules - how long interrupts can be turned...
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    Replacement firmware or downloadable code for RQDX3 to support FM RX01

    The RQDX3 has a 9224 disk controller chip. Looking at the 9224 datasheet, the chip itself supports both FM (single density) and MFM modes of operation. AFAIK the T11 firmware on the RQDX3 only supports MFM mode. Is anybody aware of either replacement firmware that also supports FM mode or of...
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    Available modern 16k plus Language cards for Apple ii europlus

    What are the available, modern Language / RAM expansion cards that support the 16k Language card RAM functionality to run Apple Pascal & Prodos. The Language cards are becoming rather old tech with suspect reliability old DRAMS and silly prices that do not match the functionality. I know of...
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    Reading FM single density encoding on Apple II disk controller

    I read that there was an early version of the P6 statemachine PROM for FM encoding. Is anyone aware of the PROM contents and the driver software to implement a standard 80k FM 1SSD drive support? Issues are: 1) P6' Statemachine PROM, 2) Changing the P5 driver code to step...
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    Front Panel Emulation for an 11/73?

    I have an 11/73 but it is in the more modern normal MicroPDP 11 case with a boring power on/off and 4 button (Restart, Writeprotect fixed disk, Halt, Ready) and has a boot EPROM. I would like to attach a Front Panel emulation such as that used on the Obsolescence Guaranteed PiDP11 emulation...
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    Apple ii - Creating bootable disk from a .dsk file

    Hi, I am trying to get an Apple II Europlus to run Apple Pascal but first need to get the .dsk image file from my PC onto an Apple format disk. The Apple does not have a serial card but does have Disk II card and single drive. I can upload the .dsk images onto an online emulator and they seem...
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