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yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... [code]
MEMORY {
rom (rx) : ORIGIN = 0x0000, LENGTH ... /> . = 0x4000;
} > rom
.data : {
*(.data) ... =
AS = /usr/bin/z80-unknown-coff-as ... br /> LD = /usr/bin/z80-unknown-coff- ... br /> LIB = /usr/bin/z80-unknown-coff- ... -
TAP format specificationHi Martijn, would you please place into documentation the TAP format specification? I am looking it up on the Internet and cannot find it. And as th…
... the SAVE procedure in ROM and copies out bytes ... calculates a checksum byte. BASin does, but that's ... the same algorithm as the ROM.
So ... aplogise. You really know ROM better then I do. ... checksum is really produced by ROM. Ok, everything is clear ... -
Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... .
Remember that in USR 0 mode, bit 4 of ... you always have the 48K ROM paged in... so, if you ... -
Compiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…
... .g. interpreting sometimes, calling the rom, or emmbeding the entire compiler ... is to load it in BASIN, copy the BASIC listing to ... -
Compiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…
... use FLOAT (the same format ROM Basic does) and it's ... to the ROM BASIC and use machine code (with USR) to do ... -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
... , after connect upgrade(version without rom chip), then after power-on ... 128 kB paging = same as USR 0 mode on original ZX128 ... you use upgrade version with rom chip, then ZX start to ... -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
... one has the 2.1 rom I think that when I ... need the 2.2 rom[/QUOTE]
Rom 2.1 not ... work with 128 rom ? Or use bad I/ ... upgrade can use new external rom (128 rom) or work as ram ... only (zx use internal 48kB rom = USR 0 mode = better compatibility with ... -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
... .1 not work with 128 rom ? Or use bad I/O ... upgrade can use new external rom (128 rom) or work as ram ... only (zx use internal 48kB rom = USR 0 mode = better compatibility with ... suggested pehaps the 2.2 rom would sort out 128k compatability -
Load! Screen$ questionI've got a basic program listing in BASIN which among other things recalls a screen via Load! (I've Save!'ed a screen into memory before hand). How d…
... /> in your basin etc you call it via randomize usr.. you could ... -
Random numbers...Hi Folks, I am not an expert when it comes to random numbers. If I have the RANDOMIZE statement the beginning of a program and then proceed to gene…
... such as [B]LET a=USR x[/B] instead of [B ... ]RANDOMIZE USR x[/B] to invoke assembly ... you could also code RESTORE USR to run a machine code ... but RENUMBER then fails in BASin. I will try LET var ... -
Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... traffic on PC and read ROM dissasembly to get to the ... " code 16384 and then run usr 16384 on ZX spectrum (yes ... -
DivIDE Real Tape?Am I going mental? I can't get my speecy to load from tape with divIDE installed. So my question is.. How do you load from a real tape when your div…
... +SHIFT - start to USR 0 mode (48 rom with 128kB memory)
rom with 48kB memory)
New game! Nanako in CJMC for ZX81!Yup, that's true. We've been busy in crafting a nice, small, simple library to code games in text mode (this is, standard, unexpanded) for the 16K ZX…
... use with UDG and standard ROM-character to make display to ... /> db 249,212,28 ; RAND USR 0 (Number not used. See ...
ld a,$1E ;restore ROM pattern table pointer
ld ...Question about divide +Hi A friend has sent my a faultly divide + to see if I can repair it. If I use this divide+ with a spectrum 48K (That works perfectly with my stand…
... socket
- backup this 512kB rom to PC file
- write ... to flash eprom new rom image : [url]http://velesoft.speccy ... plus disconnect memory and enable rom rewriting from ZX). After it ... real reset button, only R.USR 0 in basic. And test ...BASin Problems etc.Hi Folks, Paul has asked me to open this thread to document any outstanding issues that we find within BASin. No guarantees that Paul can/will fix …
... you could modify the ROM used by BASin to do screen writes ...RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... , the effect relies on the USR call itself putting the machine ... theory to hold up, the ROM would have to be written ...Question about divide +Hi A friend has sent my a faultly divide + to see if I can repair it. If I use this divide+ with a spectrum 48K (That works perfectly with my stand…
... original DivIDE 32kBram+8kB rom. This way enable installation ... plus contain also 512kB rom = on DivIDE Plus is ... 512kB rom + 512kB ram = 1MB ... 16kB ram/rom paging instead original ZX rom. RESIDOS need ... The DivIDE boots into USR 0 mode (48K Basic, ...Speccy2010 - pentagon emulation using GlukIs anyone here familar with Speccy2010 (FPGA Russian Sinclair Spectrum clone). ? I'm using Pentagon mode on Speccy2010 (it uses something called Glu…
...
I = goto 48 basic (usr 0 mode with enable 128kB ...
H = install custom ZX rom from ram page #66 (if ... this page contain rom code)
R = start Real ...RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... complete, I type the RAND USR command and it works.
USR works. Strage, because HL' is initialized by the ROM to ...RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... $FF and do the RAND USR, it works (but it doesn ... 's more places in the ROM with similar instructions, including a ...Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…
... likes to jump into the ROM at non-standard entry ... /> ;TEMPS is the standard ROM routine at 3405
LD ... 248
;BEEP is ROM routine at 1016
CALL ... ]
[B]RANDOMIZE USR 53361[/B][CODE];the routine ... (1/300),0: RANDOMIZE USR 53361[/CODE]OpenSE Software CompatibilityWith the earlier Open82 project a page was set up on Wikia ([url]http://scratchpad.wikia.com/wiki/Open82[/url]) with compatibility information on var…
... , one which checksums the ROM. I guess it's ... only work on multi-ROM machines, but you could ... alternate initialization sequence in ROM-0 that would set ... awkward titles. A PRINT USR 0 would invoke the standard ... persuaded to write the stub ROM, and it would avoid ...Loader help please (and a suggestion)I posted in my "Wicker Woman" thread that I was having problems creating a loader, but I think this is a more appropriate place to post. I've had go…
The reason for using USR 1415 is that it will [ ... LD-LEADER routine in the ROM which is waiting for a ...Loader help please (and a suggestion)I posted in my "Wicker Woman" thread that I was having problems creating a loader, but I think this is a more appropriate place to post. I've had go…
... ;540295]The reason for using USR 1415 is that it will ... LD-LEADER routine in the ROM which is waiting for a ...OpenSE Software CompatibilityWith the earlier Open82 project a page was set up on Wikia ([url]http://scratchpad.wikia.com/wiki/Open82[/url]) with compatibility information on var…
... only work on multi-ROM machines, but you could ... alternate initialization sequence in ROM-0 that would set ... and then switch to ROM-1. That could help ... awkward titles. A PRINT USR 0 would invoke the standard ... persuaded to write the stub ROM, and it would avoid ...Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
According to the Complete Spectrum ROM Disassembly that should certainly work. ... more free memory than the USR 7962 method and I'm ...Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
... (ERR_SP)+2.
The ROM's TEST_ROOM routine (called from ... bytes greater than the USR 7962 method. The USR 7962 method is ... from BASIC except by a USR call, which would change it ... 201
LET sp=USR mcode
[/code]Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
... :
[CODE]PRINT 65536-USR 7962[/CODE]
Is ... />
Yes, in the original ROM. That routine doesn't exist ... in every ROM though. The alternate method using ...Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
... ;541018]Yes, in the original ROM. That routine doesn't exist ... in every ROM though. The alternate method using ... from BASIC except by a USR call, which would change it ...Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
... RAM code in the standard ROM. The reason the result is ... different is that the TS2068 ROM uses up more RAM to ... could be similar to 48K USR call.
