diff --git a/apps/c1p/6502/README.md b/apps/c1p/6502/README.md index b16a2cccd..4733c049a 100644 --- a/apps/c1p/6502/README.md +++ b/apps/c1p/6502/README.md @@ -1,10 +1,10 @@ --- layout: page -title: Challenger 1P Machine-Language (6502) Applications +title: Challenger 1P Machine-Language Applications permalink: /apps/c1p/6502/ --- -Challenger 1P Machine-Language (6502) Applications +Challenger 1P Machine-Language Applications --- The project contains the following 6502 machine-language tests: diff --git a/apps/c1p/6502/jeffpar/README.md b/apps/c1p/6502/jeffpar/README.md index a1f4d4b72..74ae275f8 100644 --- a/apps/c1p/6502/jeffpar/README.md +++ b/apps/c1p/6502/jeffpar/README.md @@ -1,10 +1,10 @@ --- layout: page -title: Challenger 1P Machine-Language (6502) Programs +title: Challenger 1P Machine-Language Programs permalink: /apps/c1p/6502/jeffpar/ --- -Challenger 1P Machine-Language (6502) Programs +Challenger 1P Machine-Language Programs --- The project contains the following 6502 machine-language programs written by [Jeff Parsons](https://twitter.com/jeffpar) diff --git a/apps/c1p/6502/jeffpar/assembler/README.md b/apps/c1p/6502/jeffpar/assembler/README.md index eabf8fa2f..4840c1daf 100644 --- a/apps/c1p/6502/jeffpar/assembler/README.md +++ b/apps/c1p/6502/jeffpar/assembler/README.md @@ -6,23 +6,36 @@ redirect_from: - /pubs/c1p/programming/ --- -6502 ASSEMBLER/DISASSEMBLER +6502 Assembler/Disassembler --- +By Jeff Parsons -This "source code listing" from June 19, 1980 is for the first piece of software I sold, right around the +The "source code" listing below from June 19, 1980 is for the first piece of software I sold, right around the time I graduated from high school. I had had my Ohio Scientific Challenger 1P for maybe a year when I decided to write something that would make it easier to write "machine language" programs than the incredibly tedious -HEX monitor that was built into the C1P. And so my **6502 ASSEMBLER/DISASSEMBLER** was born, with full-screen -editor, assembler, and disassembler. +HEX monitor that was built into the C1P. And so my [6502 Assembler/Disassembler](ASSEMBLER-4K.json) was born, +with full-screen editor, assembler, and disassembler. + +There were two versions, one for each of the standard Challenger 1P memory configurations: + +- [6502 Assembler/Disassembler for 4K C1P](ASSEMBLER-4K.json) +- [6502 Assembler/Disassembler for 8K C1P](ASSEMBLER-8K.json) One of the conditions of the sale, however, was that I provide a "source code" listing. I don't think the buyer understood that I had essentially written the program in machine language -- because that's how I had to enter it into the machine. Maybe *some* lucky C1P users had disk drives and editors and assemblers, but I had none of those -of things. I had never even used tools like that before, which is why the **6502 ASSEMBLER/DISASSEMBLER** is a -bit of an odd duck. I'll post some screenshots and a demo eventually, and you'll see what I mean. +of things. I had never even used tools like that before, which is why the [6502 Assembler/Disassembler](ASSEMBLER-4K.json) +is a bit of an odd duck. I'll post some screenshots and a demo eventually, and you'll see what I mean. Anyway, to satisfy the buyer, I sat down at my old manual typewriter and banged out my version of a "source -code" listing. I produced it mostly by using the program to disassemble itself, combined with information -from hand-written notes (which I may still have somewhere). Here it is, many decades later, for your amusement. +code" listing. I produced it mostly by using the program to disassemble itself, combined with information from +hand-written notes (which I may still have somewhere). + +Here it is, many decades later, for your amusement. [6502 Disassembler Listing (by Jeff Parsons, June 1980)](http://archive.pcjs.org/apps/c1p/6502/jeffpar/assembler/pdfs/OSI_Assembler-Disassembler_Listing.pdf) + +NOTE: Even though the "source code" listing was based on the 8K version, it more closely resembles the +[4K version](ASSEMBLER-4K.json), because the [8K version](ASSEMBLER-8K.json) I originally located appears to be +an older vintage (4/1980 instead of 6/1980, if the embedded dates are correct). However, even the 4K version +probably doesn't align perfectly with the listing, because it appears to be *newer* than the listing (9/1980). diff --git a/devices/c1p/machine/README.md b/devices/c1p/machine/README.md index a1eddf256..657d89002 100644 --- a/devices/c1p/machine/README.md +++ b/devices/c1p/machine/README.md @@ -15,4 +15,9 @@ Here are some sample C1P Machine Configurations: * [8kb "Server Array" Demo](8kb/array/) * [32kb with Diskette Support](32kb/) -See the [C1Pjs Documentation](/docs/c1pjs/) for operational details of our Challenger 1P emulator. +See the [C1Pjs Documentation](/docs/c1pjs/) for operational details of the emulator. + +Browse our collection of [Challenger 1P Applications](/apps/c1p/), which come in two flavors: + +- [BASIC](/apps/c1p/BASIC/) +- [6502 Machine-Language](/apps/c1p/6502/) diff --git a/docs/README.md b/docs/README.md index 12317a99f..6f37183ff 100644 --- a/docs/README.md +++ b/docs/README.md @@ -32,7 +32,7 @@ Our [Publication Archive](/pubs/) includes these PC-related resources: * [Reference Manuals](/pubs/pc/reference/) * [Software User and Development Guides](/pubs/pc/software/) (eg, [DOS](/pubs/pc/software/dos/), [OS/2](/pubs/pc/software/os2/), [Windows](/pubs/pc/software/windows/)) -And publications related to Ohio Scientific's 6502-based Challenger 1P: +And publications related to Ohio Scientific's 6502-based [Challenger 1P](/devices/c1p/machine/): * [Datasheets](/pubs/c1p/datasheets/) * [Programming Guides/Samples](/pubs/c1p/programming/)