Disks for the 1571 disk drive are represented by the d71 disk image format. Commodore 1571 disk drive users guide commodore electronics on. Try to get your hands on another 1541, 1570 or 1571 drive. The drive stores 800 kilobytes using an mfm encoding but formats different from the msdos 720 kb, amiga 880 kb, and mac plus 800 kb formats. Can i use all features of a commodore 1571 external drive.
It was the doublesided version of the commodore 1570 disk drive but, unlike the 1570. You can find those diagrams among the commodore 128 schematics. I am using a zoomfloppy to attach commodore drives directly to a mac, but i. Like all commodore disk drives, these drives were smart devices. The 1541 and its precursors use the proprietary commodore gcr format. The c128 speaks to its attached disk drive when we power it on, and thats how a 1571 turns on its super fast magical properties. How to get software to disk for your commodore 64 biosrhythm. The 1571 is a doublesided floppy drive with twice the storage. The introduction of the commodore 128 and 1571 disk drive changed this situation dramatically. How to switch the commodore 1571 into 1541 mode and back the. Once you have your disk images, youre ready to make some floppies. Page 1 copy ii 64128 commodore disk utilities of copy protection schemes. Jun, 2014 commodore 1541 dos commands june, 2014 commodore 1541, c64 jay versluis the 1541 floppy drive was equipped with its own mos 6502 chip and was therefore capable of understanding and executing its own commands to format the disk, copy files, erase files, etc. Depending on format, cpm disks would format to 360 kb, with a mechanical maximum.
These disk images are used to transmit entire disks for use with emulators and mass storage devices. With its doublesided drive mechanism, it has the ability to use doublesided, doubledensity dsdd floppy disks natively. Knight games commodore 64128 mastertronic game in box preowned. Commodore 1541 dos commands june, 2014 commodore 1541, c64 jay versluis the 1541 floppy drive was equipped with its own mos 6502 chip and was therefore capable of understanding and executing its own commands to format the disk, copy files, erase files, etc. If id is omitted, the directory of the disk will be. Unlike the cases of the 1541 and 1571, the lowlevel disk format used by the. The commodore 1571 disk is the native format of the 1571 disk drive, released by commodore along with the commodore 128 computer. The design of this drive is typical for all the other dual drive disks up to the 8250, and even for the single drive 1001. For the first pet with basic 2 it started with the 2040 disk drive and with its cbm dos 1. So, in addition to the high speedhigh capacity 1571 mode, and the variable format mfm capabilities mentioned above, the commodore 1571 was capable of a commodore 1541 emulation mode, allowing it to load and run all the old commodore 64 software. The commodore 1581 disk drive is a smart device, reading and writing works independent of the connected computer. The commodore 1541 also known as the cbm 1541 and vic1541 is a floppy disk drive which was made by commodore international for the commodore 64 c64, commodores most popular home computer. I want to write these disk images back to a 1571 and 1581 disk. The disks in their standard formatting had 35 tracks with from 17 to 21 sectors in each outer tracks had more sectors, for a total of 683 sectors.
Depending on format, cpm disks would format to 360 kb, with a mechanical maximum capacity of a 400 kb format as with dd 5. Commodore vintage computer floppy drives for commodore for. Commodore 128d 1571 disk drive repair plus other minor. Unlike most other doses, which are loaded from disk into the computers own ram and executed there, cbm dos is executed internally in the drive. A look at the directory of a disk freshly formatted on a 1571 shows a total of 28 blocks free. The disk utilities allow you to prepare diskettes for use format, erase files from a. With its doublesided drive mechanism, it had the ability to utilize doublesided, doubledensity dsdd floppy disks natively. It reads files from a disk formatted in msdos format and transfers them to a disk formatted in commodore format. Commodore computer disk image visual studio marketplace. The commodore 1571 disk drive the commodore 1571 is commodores highend 5. Get the best deals on vintage computer floppy drives when you shop the largest. D64, from a 15711581 disk drive large enough to hold. Anyhoo, i recently came into posession of a commodore 128, a commodore 1902 monitor, and a commodore 1571 floppy drive. May 19, 2016 that makes the commodore 64 vs 128 a natural comparison, even more natural than comparing the 64 with the vic20.
Embed embed for hosted blogs and item tags want more. Bad 6502a cpu, probably failed a15 line driver or internal connection. The maximum size of a sequential file has been increased to a total of 337,312 bytes. Also i have included a few samples, just select mac to play any wav files wav. Commodore 1571 manuals manuals and user guides for commodore 1571. Copy ii mac is a disk backup and utility package for macintosh computers. The 1571 was designed to accommodate the c128s burst mode for 2x faster disk access, however the drive cannot use it if connected to older commodore machines. Commodore 1571 floppy disk drive sn ja4 015842 repair.
Commodore dos, also known as cbm dos, is the disk operating system used with commodore s 8bit computers. Oct 04, 2016 people frequently ask me for a list of common or useful commodore 64 commands, including disk drive commands. The commodore 1571 floppy drive powers up in compatibility mode. With its doublesided drive mechanism, it had the ability to utilize double. It also featured a very high degree of compatibility, which helped both machines sell better. This type of drive was one of the first floppy disk drives available for the home. With its doublesided drive mechanism, it had the ability to utilize. Input disk images must be raw or dsk format and must be exactly the right number of bytes in file size as listed above. The bestknown floppy disk drive for the c64, the 1541 is a singlesided 170 kilobyte drive for 5. With the c64 also usable for the vc20, c128 and plus4 the format. The singlesided 1570 floppy drive uses the same 170 kb format as previous commodore computers, can also read cpm formatted floppies, and supports msdos disks with additional software. It is a singlesided, 170 kb version of the commodore 1571, released as a stopgap measure when commodore international was unable to provide sufficient quantities of 1571s due to a shortage of doublesided drive mechanisms which were supplied by an outside manufacturer. Linux and macos agents are not currently supported. Commodore 1571 samt 1570 ar en diskettstation avsedd for anvandandet av.
On the motherboard you will find ram and rom memory, a mos 8520 cia and a mos 6502 processor. It is superior to the 1541 in that it can use both sides of the disk, and it has a high speed mode only available on the 128. The disks in their standard formatting had 35 tracks with from 17 to 21 sectors in each outer tracks had more sectors, for a. Commodore vintage computer floppy disk drives have a variety of unique features. Total disk capacity for a commodore formatted disk is now up to 349,696 bytes. It was a 5 14 singlesided disk with a capacity of 170 kilobytes. The vice emulator ctools with examples cpm d64 disk image utility rebundled aztec cz80 version 1. The 8060 series and 8280 were commodores only line of 8 disk drives, all ieee488. Find great deals on ebay for 1571 disk drive and 1541 disk drive. Find great deals on ebay for 1571 drive and commodore 1571 disk drive. It supports all known commodore disk drives, of all capacities. Create a disk image for the commodore family of computers as part of your. How to switch the commodore 1571 into 1541 mode and back wp.
A look around the 1571 commodores disk drive companion to. Here you will find details for thousands of classic c64 games, plus a lot of rare games not available anywhere else on the net. The c128 and c64 cpm 80 links page this page has just about everything you should need to get started with cpm on the c128 and c64, or provides links to it. This is your one stop site with anything about everything regarding the popular commodore 64 computer. However, normal floppies 1541707181 share a standard command set, and even newer drives sd2iec etc. We have 1 commodore 1571 manual available for free pdf download. About to lose my mind trying to copy d71 and d81 images back to. The drive could also be used with the commodore 64 and vic20 computers, but on the 128 it had access to a new burst mode which greatly increased its speed.
Dec 23, 2017 restoring an european commodore 128d sn. Below are some of the options to burn disk images for your commodore 64. This made them ideal not only for the numerous disk formats found in the cpm operating systems world, but ideal for commodore folks who wanted to share data with peecees. View online or download commodore 1571 user manual. The 1570, 1571 and the 1581 disk drives contain an mfm controller chip that can. Here is the schematic diagram of the commodore 1571 floppy disk drive. Commodore 1541 disk just solve the file format problem. As the disk drive 1571 has two reading and writing heads, it can read on. The 1570 1571 disk drives are exceptional in the fact that they are capable of reading both mfm pcstyle and gcr commodore style formatted disks. Commodore 1571 article about commodore 1571 by the free.
A look around the 1571 commodores disk drive companion. A history of commodores 8bit computers low end mac. Internal disk drive was not able to readwrite any disk. For compatibility and ease of implementation, the 1571s doublesided format of one logical disk side with 70 tracks was created by putting together the lower 35 physical tracks on each of the physical sides of the disk rather than using two times 40 tracks, even though there were no more quality problems with the mechanisms of the 1571 drives. I know that the commodore 1571 drive works perfectly well with a c64, since the 1571 will detect it is connected to a c64, and will enter 1541 emulation mode. Commodore 1571 disk just solve the file format problem. D81 which are for 1571 and 1581 formats but these are less common. The 1571 is completely backwards compatible with the c64. Although usually not supplied with the machine, floppy disk drives of the 5. The specification of the diskette capacity of commodore computers is done.
I have my 1571 connected to a commodore 128 and it will not format dd disks in 1571 mode or 1541 mode. Commodore business machiness advanced disk drive for the c128. Since the c64s built in operating system is more of a combination command linebasic interpreter, it takes some getting used to if you didnt grow up with it. The 1571 or commodore 1571 was a diskdrive made by commodore as a companion for the c128 in 1985. How to switch the commodore 1571 into 1541 mode and back. The commodore 128 was an extension of the commodore 64, with more memory, a faster disk drive, a faster cpu, and 80column video. Raw format has no additional data in it, only raw sector contents in the right order. The commodore 1581 has a external power supply, one diskette station with two read write heads and a motherboard.
Dec 24, 2015 the c128 speaks to its attached disk drive when we power it on, and thats how a 1571 turns on its super fast magical properties. Added commodore diskette diagnostic manual 1571 version 1. When attached to a 64, or a 128 in c64 mode, it will boot into. You can however do some light filing to a 1541 to allow it to reach those extra sectors. D64 format which is an image of a standard 1541 floppy. The 1581 disk drive can only read and write data in the mfm format. The 1541 was the standard floppy disk drive for the commodore 64, with nearly all disk based software programs released for the computer being distributed in the 1541 compatible floppy disk format.
Moreover it was the only commodore drive that allowed it to build subdirectories. This is not a general tutorial on using relative files on the 1571. Most likely its not the disks that are bad but the drive. Sd2iec or other mass storage device to hold disk images. The 1541 was the standard floppy disk drive for the commodore 64, with nearly all diskbased software programs released for the computer being distributed in the 1541 compatible floppy disk format. There are also special disk formats for the computer systems mac and pc e. Commodore vintage computer floppy drives for sale ebay. Get the best deals on vintage computer floppy drives when you shop the largest online selection at. Mos 6581 sid needed to be replaced and the keyboard needed a good cleaning. The monitor and the actual computer are fine, and seem to run perfectly as far as i can test, but the floppy drive has something severely wrong with it. The schematic also applies to the builtin 1571 in the commodore 128d to some extent, but not to the 1571cr, which is integrated on the motherboard of the commodore 128dcr. Make offer vintage commodore disk drive 1541 floppy drive sold as is powers on untested.
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